VERTIXOPS

Terms of Use

Effective date: November 11, 2026; for new accounts, from the day they are created · Version 1.5 · Last updated: November 2026

Summary of these Terms in your language: Español · Kreyòl ayisyen · Português · Français · Italiano · Русский

In short: VertixOps is a work tool for independent service professionals and small service companies in the United States, in many trades. It keeps your records and helps you prepare your own documents. It does not do your work, your bookkeeping or your taxes for you, and it does not give technical, safety, legal, tax, accounting or regulatory advice. Your records are encrypted on your phone before they are backed up, and we do not hold the keys, so we cannot read them. There are two exceptions: what you choose to send to an AI feature, which is processed to give you a result and is not stored by us; and, if you turn on online payments, the few details of each invoice that are needed to collect it (its number, amount, your business name and the status of the payment), which our server can read (Annex B and Privacy Policy, section 2). The App also has a help assistant that answers questions about how to use the App; it is an AI, its answers can be wrong, and it is not support from a person (section 10). You own your data and you are responsible for your work, your documents, your licenses, your taxes, the people you pay and what you send and charge to your customers. If you join a company account, the company controls the records created in it, and other members can see them according to their role (section 8). The Owner and Billing members of a company can also work from a computer, in the web office, and send the company’s invoices, and its weekly report, by email from our server (section 8). Paid plans renew automatically until you cancel. The 14-day free trial turns into PREMIUM at $24.99 per month unless you choose another plan or cancel before it ends. We never raise the price of your plan without telling you at least 30 days before (section 25), telling you again 7 to 30 days before the new price applies and asking for your consent (section 6). If you turn on online payments, your customers pay you through your own Stripe account, Kainapp never receives your money, and each payment carries Stripe’s fees and a small VertixOps fee, listed in full in Annex B. Sections 16 through 18 limit our responsibility to you. Section 21 contains an arbitration agreement and a class action waiver that affect how disputes are resolved; you can opt out within 30 days. A summary of these Terms is available in each language of the App (section 24).

Added in October 2026: new rules for “Your client pays the fee” (Annex B, B4A); the emails our server sends for a company and the rules for them (sections 8, 9, 11 and 18); Amazon Web Services (Amazon SES) named as a provider (section 13 and Annex A); what happens to your own plan when your company is closed (section 8); what happens when an age check shows that a user is under 18 (section 2); clearer rules for AI results, the photo tools and inspections (sections 9, 10, 11, 16, 17 and 18); a public safety page for the help assistant (section 10); rules for collecting unpaid invoices (section 9); fake or unordered invoices (section 11, Annex B and Annex C); what you can export on each plan (sections 12, 14 and 15); and new general terms about account security, promotions, future features, complaints, printed copies, government users and transfers (sections 3, 4, 14, 15 and 24).

1. Who we are and agreement to these Terms

VertixOps (the “App”) is provided by Kainapp LLC, a Florida limited liability company, based in Florida, USA (“we”, “us”, “our”). Contact: info@kainapp.com.

By creating an account, checking the acceptance box or using the App, you agree to these Terms and to our Privacy Policy. If you do not agree, do not use the App. If you use the App on behalf of a company, you confirm you are authorized to accept these Terms for it, and “you” includes that company.

These Terms are a binding agreement between you and Kainapp LLC. They apply to the VertixOps mobile app, to the web pages we publish about it, and to any support we give you. Where these Terms say “the App”, that includes every feature of the app, every plan, and those web pages and support.

Please read these Terms carefully and keep a copy. They explain what the App does and does not do, what you are responsible for, how subscriptions and the free trial are charged, how company accounts work, how online payments to you work and what they cost (Annex B), how our responsibility to you is limited, and how disputes are resolved.

These Terms include Annex A (data processing terms), Annex B (online payments terms) and Annex C (information for people who pay an invoice through VertixOps, in English and Spanish). Some features may show additional terms or notices inside the App at the moment you use them. Those are part of this agreement. If something shown inside the App conflicts with these Terms, these Terms control, except that (a) a notice that clearly says it changes these Terms controls, and (b) when what we showed or sent you about prices, fees, renewal, the free trial, cancellation, refunds or your right to opt out of arbitration is more favorable to you, section 24 (“Language”) applies.

2. Eligibility

You must be at least 18 years old and use the App for your trade or business. The App is not intended for children or for personal, family or household use.

You confirm that you are legally able to enter into this agreement, that the information you give us is true, and that you are not prohibited from using the App under the laws of the United States or any other law that applies to you.

United States only. The App is offered for, and intended to be used in, the United States, by people and businesses located in the United States. It is operated from the United States, its documents are prepared in English and in US dollars, and it is designed around how work is invoiced in the United States. We make no statement that the App is appropriate, lawful or available in any other place. If you choose to use it from outside the United States, you do so on your own initiative and at your own risk, and you alone are responsible for complying with the laws of that place, including its tax, invoicing, privacy, employment and consumer protection laws.

Sanctions and export laws. You confirm that you are not located in, or ordinarily resident in, a country or region subject to a comprehensive US embargo, that you are not on, or owned or controlled by anyone on, a US government list of prohibited or restricted parties, and that you will not use the App, online payments or any AI feature in violation of US export control or sanctions laws.

Business use. The App is a tool for a trade or business, and it is not offered for personal, family or household use. Even so, we give every user, whether a person or a business, the protections that consumer laws give to consumers about automatic renewals, free trials, cancellation, price changes, notices, disclosures of fees and fair treatment, as these Terms describe. Nothing in these Terms takes away a protection that a law gives you as a business, including the Florida Deceptive and Unfair Trade Practices Act.

Age signals. Where the law requires it or allows it, Apple, Google or your device may tell us the age category of the person using the App. We use that information only to keep minors from using the App and to comply with the law. Where the law requires it (today in Texas, and from 2027 in Alabama, California, Louisiana and Utah), we ask for that information. On an iPhone, the App asks only when Apple says the law applies to that account. On an Android phone, the App asks for every account. If the answer shows that the person is under 18, the App signs the person out and the account is closed at once: nobody can sign in to it again. Thirty days later we delete the account and everything in it, in the same way as when a person deletes their own account (section 3 and Privacy Policy, section 7), unless before then the person shows us that it was a mistake by writing to info@kainapp.com. If that account is the Owner of a company, the company is deleted with it (section 8). We keep a record of the result of each check (adult, minor or unknown), its date and the type of phone, together with the consent records (section 6, “Consent records”). We never receive or keep the person’s age or date of birth.

3. Your account

4. Plans and usage limits

Prices are in US dollars, per month, before any applicable taxes. If the price shown by Apple or Google at the moment you buy is different from a price listed here, the price shown at the moment you buy is the one that applies.

Help assistant (Ask for help). The App includes a help assistant that answers questions about how to use the App (section 10). Its questions are counted separately from the AI uses listed above and do not use them up. During the first 14 days after an account is created, every plan includes 10 questions per day. After those 14 days: PREMIUM includes 5 questions per day, or 10 per day while the account is in a PREMIUM free trial; CORPORATE includes 10 questions per day for each member of the company, as long as the company is not closed for non-payment; FREE and PRO do not include the help assistant, and the App offers you to move to PREMIUM instead. The option stays visible on every plan. A question is counted when it is answered; if the AI service fails or returns nothing, the App gives that question back. The count resets each calendar day, measured in US Eastern Time. Unused questions do not carry over and have no cash value. During those first 14 days, the help screen shows the date on which they end and what your plan includes after that date, so that you know it before it changes. We may change these numbers, or limit or remove the help assistant, as described in this section and in section 10.

What counts as an AI use. Each request you send to an AI feature counts as one use: each time you tap Clean up on a text, each part you ask the parts assistant to identify, each nameplate photo you ask the App to read, each search for a manual, each search with Where to buy, each photo you send to a photo tool for your trade, and each request you send to the VertixOps assistant. A use is counted when the request is processed, whether or not you keep or use the result. The App gives that use back if the AI service fails, if it cannot read the nameplate at all, if it finds no manual, if Where to buy finds no store, if a photo tool cannot tell what the photo shows, or if the parts assistant returns no name. Questions to the help assistant are counted separately, as described above.

When limits reset. Monthly limits reset at the start of each calendar month, not on the day your subscription renews, and daily limits reset each calendar day. AI limits are measured in US Eastern Time. Limits that are counted on your phone, such as photo reports, invoices and estimates, are measured with the date and time of your device. Unused uses do not carry over and have no cash value. When you reach a limit, the feature pauses until it resets or until you move to a plan that includes more.

Changing plans. If you move to a plan with fewer features, the features that are not part of your new plan stop being available until you move back. We do not delete the records on your phone because you changed plans. Backup of photos and files is a paid feature: on the FREE plan new photos and files are not backed up, and copies backed up earlier may be removed from the cloud, so keep them on your device and keep your own copies.

Promotions and credits. If we offer a promotion, a discount code, free time or a credit, it follows the conditions shown with it. Unless those conditions say otherwise, it cannot be exchanged for cash, cannot be transferred to another account, and ends when the account is deleted. These rules never take away a credit or a refund that we give you as a remedy under these Terms (for example under section 6), and where the law requires a refund in money, we give it in money.

Before plans start. Before we start charging for plans, every account may have the features of PREMIUM at no charge, and the App may not let you change plans. We will tell you in the App before the limits in this section start to apply to you. Nothing is charged for that time.

We may add, change or remove features, and may set reasonable limits to prevent abuse or protect the service.

5. Free trial

6. Billing, renewal, cancellation and refunds

CORPORATE plan

Updated in November 2026. Since November 2026, the CORPORATE plan is a subscription that the Owner buys in the App through the Apple App Store or Google Play, like the other paid plans. The rules above about Apple and Google, about auto-renewal, cancellation and refunds through the store, apply to CORPORATE too. CORPORATE is no longer sold or billed through our website, and we no longer use Stripe for it.

7. Your content

Everything you enter or upload (clients, machines, jobs, reports, invoices, estimates, job details, your saved materials, expenses, payments you record, appointments, notes, photos and files) is “Your Content”. You keep ownership of it, except for records created in a company account, which are governed by section 8. You give us a limited license to host, store, copy, process, transmit and back up Your Content only as needed to operate, secure and improve the App for you. This license ends when Your Content is deleted, except for copies kept for the short periods described in the Privacy Policy.

You confirm that you have the rights and any permissions needed for Your Content, including information about your own customers, their premises and their equipment, and information about the people you pay, and that it does not violate any law or anyone’s rights.

Encrypted backup; we cannot read Your Content. Your records are saved on your phone. When you turn on the encrypted backup, the App encrypts them on your phone, before they leave it, with a key that is protected by your password and by your recovery code. We and our providers store only the encrypted copy. We do not have your password, your recovery code or the key, so we cannot read, review or decrypt Your Content. Until you turn on the encrypted backup, your records exist only on your phone and nothing is backed up.

What we can see. We can see only the information that is not inside the encrypted copy: your account details (name, email and phone), your language, the trades you selected, your plan and subscription status, how many AI uses you have used, how many questions you asked the help assistant and how many feedback messages you sent today, the record of when you accepted these Terms and of your consent to an automatic renewal, the date of your last backup, the number and size of your encrypted files, which service emails we sent you (the type of message and the date, not its text) and whether you unsubscribed from news. If you belong to a company account, we can also see the company’s name, the name, email and role of each member, the name and email written on a pending invitation, which clients are assigned to which member (as internal codes, not names), and, for each company record, what type of record it is, which member created it and when. If you turn on online payments, we can also see the payment information listed in section 2 of the Privacy Policy (“Online payments”): your Stripe account identifier, whether it is ready to receive payments and whether you stopped online payments; and, for each invoice you send with a payment link, its number, its amount, the business name shown on the payment page and, for each payment attempt, Stripe’s identifier for it, the method, the amount, the time and the status, any amount refunded and whether the invoice was paid more than once. If you turn on “Your client pays the fee”, we can also see that setting and the card price and the bank price of each invoice with a payment link. For the web office, we can see how many emails each company and each person sent (counts only, without addresses or content). We can also see the result of the age check described in section 2. Apart from that, we cannot see what any record says.

The exceptions: what you choose to send or share. Your Content leaves your phone in a readable form only when you decide it should: when you use an AI feature, in which case the text, the photo or the machine details you submit are sent to our server and to our AI provider to produce the result and are not stored by us (section 10); when you send an invoice with a payment link, in which case the invoice number, the amount and the business name shown on the payment page are stored on our server and sent to Stripe so that your customer can pay it (Annex B); when you set up online payments, in which case we send Stripe your account email and an internal code for your account so that Stripe can create your Stripe account (Annex B); when you yourself send or share an invoice, an estimate, a report or a file by email, text or another app on your phone; and when the Owner or a Billing member of a company sends a company invoice or estimate by email from the web office, or asks for the company’s weekly report, in which case the document, the message and the email address of the recipient pass through our server and our email provider for that purpose only to be sent, and are not stored by us or by that provider (section 8, “The web office”). The questions you write to the help assistant and the feedback you send us from the App are also sent in readable form, with the details described in the Privacy Policy. Neither of them receives Your Content unless you type it in yourself.

Recovery code. When the encrypted backup is turned on, the App gives you a recovery code. Keep it somewhere safe, outside your phone. If you reset your password, the App will ask for the recovery code to open your backup. If you lose your phone and also forget your password and lose your recovery code, your backup cannot be restored by anyone, including us. We are not responsible for data that cannot be recovered for this reason.

We do not monitor Your Content. We do not review, approve or edit what you enter, we do not hold the keys needed to read your encrypted records, and we have no obligation to monitor them. You are solely responsible for Your Content and for everything done in and through your account, including documents you create and send. We are not responsible for any content, act or omission of any user. We may remove content or suspend an account if we are notified of, or become aware of, content or activity that breaks these Terms or the law.

Information you should not put in the App. The App is not designed to hold certain kinds of information, and you agree not to enter them in any record, note, photo, job detail, AI request or message: full payment card numbers or card security codes; bank account numbers or bank log-in details; full Social Security numbers, driver’s license numbers or other government identification numbers (except where a law requires you to record them and you accept responsibility for protecting them); passwords of your customers’ accounts or systems; health information about anyone, including protected health information under HIPAA; and information about children beyond what you need to do the job. We are not a “business associate” under HIPAA and we do not sign business associate agreements. Alarm codes, gate codes, lockbox codes and key information can be useful for your work, but if you store them, you do so at your own risk and you are responsible for who can see them, including members of your company and anyone you send a document to.

Statistics without names. We may create statistics about how the App is used (for example how many invoices are created, which features and plans are used, or how many payments succeed) only from the information we are able to read (section 7, “What we can see”), never from your encrypted records. Those statistics are combined and do not identify you, your business, your customers or anyone else. We use them only to run, secure and improve the App and our business, we do not sell them, we do not use them to train AI models, and we will not try to identify anyone from them or let anyone else do so.

Support. Because we cannot see your records, if you need help with a specific item you may choose to send us a screenshot or description. Only share what is necessary, and do not send us your password or your recovery code. We will never ask for them.

Feedback. The App has a Send feedback option to tell us what you think of the App and what you would add or remove. What you write is sent to us as an email together with your first name, your email address, your plan, your role if you belong to a company, your language, the version of the App and whether you use an iPhone or an Android phone, so that we can answer you; it is not saved in our database. Feedback is not a support request: we read it, but we do not promise to answer it or to act on it, and sending it does not create any obligation for us. Do not include passwords, your recovery code, payment card numbers or personal information about your customers or other people. To prevent abuse, the number of feedback messages an account can send in a day is limited. Section 12 explains how we may use suggestions and feedback.

Backups are your responsibility. Photos and files are stored on your device; on paid plans an encrypted copy is also backed up, a few at a time in the background, and on the FREE plan they are not backed up. Very large files (about 15 MB or more) are not backed up. The cloud backup is a convenience, not a guaranteed archive: a backup can be incomplete if your phone had no connection, if the App was closed before it finished, or if a file was too large. Keep your own copies of anything important, including invoices, receipts and records you may need for taxes, warranties, disputes, inspections or any record-keeping law that applies to your trade (section 9). The optional weekly email report can help. In a personal account, when you turn it on, the App shows a notification every Sunday at 6 PM; when you tap it, your phone creates a PDF of your week (your jobs, with up to 40 small photos, and your invoices, estimates and expenses) and opens your own email app, addressed to you, and you send it yourself. It does not pass through our servers. In a company account the weekly report works differently: our server emails it (section 8, “The weekly report”).

Your phone is the main copy. The App treats what is on your phone as the current version of your records and the cloud as its backup. If you use more than one device with the same account, or restore an older backup, records can be overwritten. Check that your records are complete after restoring or changing phones.

8. Company accounts

A person can create a company account inside the App and invite other people to join it with an invitation code. The person who creates it is the Owner. Records created inside a company account (“Company Content”) are shared among its members according to their role, and are encrypted on the members’ phones with a company key before they are stored on our servers. We cannot read Company Content. Unlike a personal account, Company Content is stored in the cloud so that it can travel between the members’ phones.

The web office. The Owner and the Billing members of a company account can also use VertixOps from the web browser of a computer, at vertixops-be3cf.web.app/office (the “web office”). The web office is part of the App, and these Terms and the Privacy Policy apply to it. It is only for the office of a company: Employees, personal accounts and the creation of accounts use the App on a phone. In the web office you can see the company’s clients, the work reports and photos the members send from the App, create, send, mark as paid and delete invoices and estimates within the limits of your role (this section), approve or reject the requests of the members, and keep the company’s bookkeeping (expenses and receipts, the pay of the staff, the year’s totals and the CSV export), within the limits of your role. The Owner and Billing also keep, in the web office and in the App, the company’s calendar of appointments, its list of materials (the other members see only the names of the materials, never their prices or costs) and their own “Weekly email report” and “Mute alerts” settings. In the web office the Owner can also set up and stop online payments and turn “Your client pays the fee” on or off (Annex B), and every user of the web office can ask the help assistant, send feedback, write to Support, change their password and choose their trades. The web office does not ask you to accept a new version of these Terms; the App on your phone does (section 25).

Roles

Who controls Company Content

Owner and company responsibilities

9. Your work and your documents

Trade-specific records, materials and regulated work

The App can be used for many trades: equipment, A/C and heating, refrigeration, appliance repair, garage doors, plumbing, electrical, carpentry, construction, handyman work, landscaping and gardening, pool service, painting, cleaning and janitorial work, pest control, roofing, flooring and tile, locksmith work and pressure washing. Choosing a trade only changes how the App is organized and which fields it offers. It does not mean that the App knows, checks or meets the rules of that trade.

10. AI features

Some plans include AI features. These features are powered by a third-party AI provider, currently Anthropic, PBC, and what you submit is sent to our server and to that provider to produce the result. We may change the provider; if we do, we announce it in advance as Annex A (“Providers we use”) and the Privacy Policy describe. The AI features today are:

AI output can be wrong. AI output is generated automatically and may be inaccurate, incomplete or unsuitable. Review every result before you use it on an invoice, an estimate, a report, a machine record or a parts order. You are responsible for anything you keep, send or act on. Before you rely on an AI result, act on it, or pass it to a customer, a person qualified for that work, normally you, must check it against the product label and with their own judgment. If you find that an AI result, a document or a record made with the App is wrong, stop using it, correct it, and take reasonable steps to limit any harm, including telling your customer where needed. Section 9 (“No technical or safety advice” and “AI results are not inspections or licensed opinions”) applies in full to AI results.

Using AI results with your customers. When you put a result of an AI feature on an invoice, an estimate or a report, or send it to anyone, it becomes your own statement to that person, as if you had written it. Read it first. An AI translation is not a certified or professional translation, and it does not replace a document or a notice that the law requires in your customer’s language (section 9). Do not present an AI result as work that was checked, inspected or written by a licensed person, or by Kainapp, when it was not. If a law that applies to you or to your trade requires you to tell a customer that you used AI (for example, in Utah, for people in regulated occupations in certain situations), you are responsible for telling them. If you use an AI result to make a decision about a customer, a worker or anyone else, the decision is yours, and you are responsible for any law that applies to it.

No AI feature acts on its own. No AI feature in the App sends a message, changes or deletes a record, places an order or makes a payment on its own. A result is added to your records only when you tap to add or save it, and nothing is sent, bought or changed unless you tap to do it. If we ever add a feature that acts for you, we will describe it here and ask you to turn it on first.

Who owns AI results. A result an AI feature gives you that you keep in your records is Your Content, and we claim no ownership of it. AI features can give the same or similar results to other users, and those results are not yours alone.

Our AI provider’s rules. When you use an AI feature you also agree to follow the usage policy of our AI provider (currently the Anthropic Usage Policy), which forbids, among other things, using AI for illegal, harmful, deceptive or abusive purposes. If a request breaks that policy, the feature may refuse it, and we may limit your access to AI features.

What not to send. Do not submit information you do not want processed by the AI provider. Do not include passwords, payment card numbers, bank account numbers, government identification numbers, health information or other sensitive personal information in text you send to Clean up or the parts assistant, and frame nameplate photos and the photos you send to the photo tools so they show the label, the plant, the strip, the pest, the surface, the material or the lock, and not people, faces, vehicle plates, house numbers or private documents. The same applies to the questions you write to the help assistant: ask how to use the App, and do not include passwords, your recovery code, payment card numbers, government identification numbers, or personal information about your customers or other people.

Not stored by us. The text, photos, item names and machine details you send to AI features, and the store links that come back, pass through our server only to be forwarded to the AI provider and to return the result. We do not store them. The provider processes them under its own terms and may keep them for a limited time under its own policies. According to Anthropic’s published privacy information (updated July 1, 2026), it deletes what it receives through its API, and its answers, within 30 days, unless its safety systems flag a request as breaking its usage policy, in which case it can keep that request and its answer for up to 2 years, or unless the law requires it to keep them longer. We will update this text if that policy changes. The questions you ask the help assistant and its answers are treated the same way: we do not store them, and the conversation is kept only on your screen while it is open.

Availability. AI features depend on the AI provider and on your connection. They may be slow, limited or unavailable at times, and we may change, limit or remove them. AI features are not a substitute for your own professional judgment, or for advice from the manufacturer or a qualified professional. Never rely on an AI result alone to choose a product, a chemical, a dose or a refrigerant, to decide what the law requires, or for safety: check it against the label, the manufacturer’s instructions and the rules that apply to you.

State laws about AI and chat features. Several states have their own laws about telling people when they are dealing with an AI system and not with a person, about automated chat features, and about consent before what is written in a chat is read by, recorded by or shared with another company. Those laws are different from state to state, and some of them apply only to certain kinds of AI or to businesses above a certain size. We do not want what you are told to depend on where you live, so we apply the same rules to every user in every state: (1) before you use an AI feature for the first time, the App tells you that it is an AI and that what you send is read by our server and by our AI provider, and nothing is sent until you agree; (2) the help assistant is identified as an AI on its screen and above every answer, and it tells you so whenever you ask; (3) no AI feature in the App presents itself as a person or as a licensed professional; (4) what you send to an AI feature is not stored by us and is not used to advertise to you; (5) using an AI feature is always your choice, and the rest of the App works without it; (6) no AI feature in the App is designed or offered as a companion, or to build a personal or emotional relationship with you: the help assistant answers questions about using the App only, does not remember earlier conversations once you close them, and does not start conversations on its own; (7) no AI feature uses, in its answers or in how it is presented, titles such as doctor, nurse, therapist, counselor, psychologist, lawyer, accountant, engineer or licensed contractor, or says or suggests that its answers come from a licensed professional; (8) we do not use AI to make decisions about you that have legal or similarly significant effects, such as decisions about credit, employment, housing, insurance or access to essential services, and we do not use AI to decide whether to suspend or close your account without review by a person; (9) the App is for adults (section 2), and the AI features are not offered to minors; (10) we do not use what you send to AI features, or any of your personal information, to train AI models, and under its commercial terms our AI provider does not use it to train its models either; (11) we publish how the help assistant handles messages about suicide, self-harm or harming others on our help assistant safety page, and we will file any report about it that a state law requires; and (12) no AI feature acts on its own (see “No AI feature acts on its own” above). Nothing in these Terms limits or takes away a right that the law of your state gives you and that cannot be waived by agreement. If the law of your state requires more than this section says, that law applies to you.

11. Acceptable use

You agree not to:

12. Our intellectual property

The App, its design, code, name, logo and content (other than Your Content) belong to us or our licensors and are protected by law. We give you a personal, revocable, non-exclusive, non-transferable license to use the App under these Terms. You do not buy or own the App or any copy of it. A paid plan gives you a license to use the App’s paid features for as long as the plan is active, under these Terms; the words “buy”, “subscribe” or “upgrade” in the App mean that you are getting that license. Your Content is yours, and while your account exists you can take it out of the App at any time in the ways your plan offers: on every plan, you can save or share each invoice, estimate and report as a PDF; on PREMIUM and CORPORATE, you can also export your bookkeeping as a CSV file (sections 4 and 9 and Privacy Policy, section 8). Keep your own copies of anything you need outside the App. “VertixOps”, “Kainapp” and their logos may not be used without our written permission.

Names, brands and model names of equipment and parts that appear in the App, in AI results or in manuals belong to their owners. Their appearance in the App does not mean that those owners sponsor, approve or are connected with the App.

If you send us suggestions or feedback, we may use them freely without any obligation to you. This applies to anything you send us with the App’s Send feedback option, by email or in any other way. You give us a perpetual, irrevocable, worldwide, royalty-free right to use those ideas and suggestions in the App and in our business, without payment, credit or any other obligation to you, and you confirm that you have the right to send them to us. We do not treat feedback as confidential, so do not send us anything you want kept secret. We will not publish your feedback in a way that identifies you without your permission. This paragraph does not give us any right over Your Content.

Your name and logo. We will not use your name, your business name, your logo or anything you say about the App in our advertising or on our website without your separate written permission, which you can withdraw at any time for the future. If we ever give anything in exchange for a review or a testimonial, we will make sure that it is disclosed.

Copyright complaints

We respect the rights of authors and other copyright owners and expect our users to do the same. Do not put into the App, or share through it, material that you do not have the right to use.

Manuals. The manual search gives you links to documents published on other websites, usually by the manufacturer. We do not host a shared library of manuals. If you choose to save a manual, the copy is stored in your own account, encrypted, for your own use in maintaining that equipment. You are responsible for having the right to keep and use it.

How to send a notice. If you believe that material available through the App infringes your copyright, send a written notice to our copyright agent with: (1) your physical or electronic signature; (2) the work you say was infringed; (3) the material you want removed and enough information for us to find it, such as the link or the account involved; (4) your name, address, telephone number and email; (5) a statement that you believe in good faith that the use is not authorized by the owner, its agent or the law; and (6) a statement, under penalty of perjury, that the information in the notice is accurate and that you are the owner or are authorized to act for the owner.

Copyright agent. Kainapp LLC, Copyright Agent · info@kainapp.com · mailing address: 19591 NE 10th Ave, Bay C, North Miami Beach, FL 33179, USA.

What we can do. Users’ records and saved files are encrypted with keys we do not have, so we cannot open them to look for a particular file. When we receive a valid notice we act on what we are able to identify: we can remove a link that the App shows, and we can suspend or close the account involved. We tell the user affected, where we can.

Counter-notice. If your material or your account was affected by a notice and you believe that was a mistake, you can send our copyright agent a counter-notice with: your signature; what was removed or disabled and where it was; a statement under penalty of perjury that you believe in good faith it was removed by mistake or misidentification; your name, address and telephone number; and your consent to the jurisdiction of the federal court for your district, or for Miami-Dade County, Florida if you are outside the United States, and to accept service from the person who sent the notice. We may restore the material or the account between 10 and 14 business days later unless that person tells us they have filed a court action.

Repeat infringers. We close, in appropriate circumstances, the accounts of users who infringe repeatedly.

13. Third-party services

The App relies on services from third parties, such as Apple, Google, Firebase, our subscription provider (RevenueCat), our AI provider (Anthropic), our email delivery providers (Resend, for our own emails to you, and Amazon Web Services, through Amazon SES, for the invoices and estimates that the Owner or a Billing member of a company sends by email from the web office and for the company’s weekly report) and our payment processor (Stripe), both for CORPORATE plans and, if you turn on online payments, for the Stripe account you open and use under your own agreement with Stripe (Annex B), and Intuit (QuickBooks Online), if you connect your own QuickBooks account (Annex D). Their terms may also apply to you, and we are not responsible for their availability or conduct. We make no promise on behalf of any of them.

The App can also open or download content from third-party websites, for example a manual found by the manual search. We do not control those websites and are not responsible for their content, accuracy, security, availability or practices. You use them at your own risk.

14. Availability and changes

We may update, suspend or discontinue the App or any feature, including for maintenance, security or legal reasons. If we permanently discontinue the App, or a paid feature you are paying for, we will give you at least 30 days’ notice by email, except where a law, a court, a provider we depend on or a security emergency does not allow it; during that time you can export your records in the ways your plan offers (section 12), and we refund the unused part of any CORPORATE billing period already paid. For a plan bought through Apple or Google, we stop renewals before the App is discontinued and support your refund request with the store for any unused period.

In a personal account, most of the App works without an internet connection: you can create and edit clients, machines, reports, estimates, invoices, expenses and appointments on your phone, and the encrypted backup copies them when the connection returns. An internet connection is needed for sign-in, the backup, company accounts and the web office, the AI features (including the help assistant), online payments and payment links, subscriptions, sending feedback, and every email: the invoices and estimates sent from the web office, the company’s weekly report and our service emails. When you email or text a document from your phone, your own email or messages app sends it, and it leaves only when your phone has a connection. Without a connection those features do not work, or wait until the connection returns. Check that a document or a payment link was actually sent before you rely on it; we are not responsible for anything that was not sent, received or done because your phone, your computer or a provider was offline. We do not promise any level of uptime, speed or support response time. You may need to install updates to keep using the App, and older versions may stop working.

Early-access features. We may label a feature in the App as “beta”, “early access”, “preview” or “new”. Such a feature is still being tested: it may contain errors, it may change or be removed, and it may never become a permanent part of the App. Using it is optional. We do not promise support or uptime for it, so keep your own copies of anything you create with it. The protections of these Terms and of the Privacy Policy apply to it in full. We never charge for an early-access feature without telling you the price in advance and asking for your consent, removing one does not take away anything you already paid for, and any change that increases what you pay is announced as section 25 describes and, for the price of a plan, also as section 6 describes.

Features we may add later. When you choose a plan, rely only on the features the App has at that time. We may talk about features we are working on, but we do not promise that they will be offered, or when, unless these Terms promise it.

15. Suspension and termination

We may suspend or terminate your access, or a feature such as online payments, if you break these Terms, create risk or legal exposure for us or for others, or do not pay. Except where there is fraud, a serious breach, a security risk, a risk of harm to others, or a legal requirement or instruction from a provider that does not allow it, we will give you at least 30 days’ notice by email before we close a paid account, tell you the reason, and give you the chance to export your records in the ways your plan offers (section 12); in the other cases we will tell you as soon as we can. Suspending or closing an account is always reviewed by a person. You may stop using the App at any time. Sections 7, 8, 9, 10, 12 and 16 through 24, and Annexes A and B to the extent they concern payments already made, continue to apply after termination, together with any other part of these Terms that by its nature should continue.

Complaints about you. If one of your customers, or anyone else, complains to us about you, about an invoice or a payment link you sent, or about an email our server sent for you, we may forward the complaint to you and tell the person to contact you. We do not decide disputes between you and your customers. If the complaint suggests fraud or a breach of these Terms, we may act as this section and Annex B, B9 describe.

16. Disclaimer of warranties

THE APP IS PROVIDED “AS IS” AND “AS AVAILABLE”. TO THE MAXIMUM EXTENT ALLOWED BY LAW, WE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. WE DO NOT WARRANT THAT THE APP WILL BE UNINTERRUPTED, ERROR-FREE OR SECURE, THAT CALCULATIONS OR AI RESULTS WILL BE ACCURATE, THAT ONLINE PAYMENTS OR THEIR STATUS WILL ALWAYS BE AVAILABLE OR UP TO DATE, OR THAT DATA WILL NOT BE LOST.

WITHOUT LIMITING THE ABOVE, WE DO NOT WARRANT: THAT TOTALS, TAXES, BOOKKEEPING FIGURES, PROFIT FIGURES, PER-PERSON PAYMENT TOTALS OR EXPORTS ARE CORRECT OR COMPLETE; THAT ANY DOCUMENT, JOB DETAIL OR MATERIALS LIST CREATED WITH THE APP MEETS ANY LEGAL, TAX, INVOICING, LICENSING, ENVIRONMENTAL OR RECORD-KEEPING REQUIREMENT; THAT TRANSLATIONS, PART NAMES, NAMEPLATE READINGS OR MANUALS ARE CORRECT, COMPLETE, CURRENT OR RIGHT FOR A PARTICULAR MACHINE; THAT PHOTO TOOL RESULTS (INCLUDING IDENTIFICATIONS, READINGS OF TEST STRIPS, LABELS AND COLOR CODES, AND SUGGESTED PRODUCTS, METHODS, AMOUNTS OR SETTINGS), STORE LINKS, PRICES OR AVAILABILITY SHOWN BY WHERE TO BUY, OR ANSWERS FROM THE HELP ASSISTANT ARE CORRECT, COMPLETE, CURRENT, SAFE OR RIGHT FOR A PARTICULAR PLACE OR JOB; THAT THE CARD AND BANK PRICES OF ANNEX B, B4A ARE ALLOWED WHERE YOU WORK; THAT REMINDERS OR NOTIFICATIONS WILL BE DELIVERED OR DELIVERED ON TIME; THAT A BACKUP WILL BE COMPLETE OR CAN BE RESTORED; OR THAT THE APP WILL WORK ON EVERY DEVICE OR WITH EVERY VERSION OF ITS OPERATING SYSTEM.

IF THE LAW THAT APPLIES TO YOU DOES NOT ALLOW ONE OF THE EXCLUSIONS ABOVE, THAT EXCLUSION DOES NOT APPLY TO YOU, AND THE REST OF THIS SECTION STILL DOES. SECTION 17, UNDER “WHAT THESE LIMITS DO NOT DO” AND “NEW JERSEY”, EXPLAINS WHICH ONES. (FOR NEW JERSEY RESIDENTS, SECTION 17, “NEW JERSEY”, LISTS EXACTLY WHICH PROVISIONS DO NOT APPLY.)

17. Limitation of liability

TO THE MAXIMUM EXTENT ALLOWED BY LAW, WE WILL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, EXEMPLARY OR PUNITIVE DAMAGES, OR FOR LOST PROFITS, REVENUE, BUSINESS, GOODWILL OR DATA, EVEN IF ADVISED OF THEIR POSSIBILITY. OUR TOTAL LIABILITY FOR ALL CLAIMS RELATED TO THE APP IS LIMITED TO THE GREATER OF (A) THE AMOUNT YOU PAID FOR THE APP IN THE 12 MONTHS BEFORE THE CLAIM OR (B) US $50. THE FEES YOU PAID FOR ONLINE PAYMENTS (ANNEX B) COUNT AS AMOUNTS YOU PAID FOR THE APP. AMOUNTS YOU PAY TO A STORE FOUND WITH WHERE TO BUY ARE NOT AMOUNTS PAID FOR THE APP. THE PARAGRAPHS “WHAT THESE LIMITS DO NOT DO” AND “NEW JERSEY” BELOW EXPLAIN WHICH LIMITS MAY NOT APPLY TO YOU.

WITHOUT LIMITING THE ABOVE, AND TO THE MAXIMUM EXTENT ALLOWED BY LAW, WE ARE NOT LIABLE FOR: YOUR WORK, OR ANY INJURY, DAMAGE OR LOSS ARISING FROM IT; ERRORS IN YOUR INVOICES, ESTIMATES, REPORTS, PRICES, TAXES OR BOOKKEEPING; TAXES, PENALTIES OR INTEREST YOU OWE; MONEY YOUR CUSTOMERS DO NOT PAY YOU, OR PAYMENTS THAT ARE REFUNDED, DISPUTED, CHARGED BACK, RETURNED, DELAYED, HELD OR REVERSED, AND ANY FEES, FINES, RESERVES OR NEGATIVE BALANCES IN YOUR STRIPE ACCOUNT; THE ACTS OR DECISIONS OF STRIPE, INCLUDING THE REVIEW, RESTRICTION OR CLOSURE OF YOUR STRIPE ACCOUNT; FINES OR PENALTIES FOR LICENSING, PERMIT, PESTICIDE, REFRIGERANT, ENVIRONMENTAL, SAFETY OR RECORD-KEEPING RULES THAT APPLY TO YOUR WORK; HOW YOU CLASSIFY OR PAY THE PEOPLE WHO WORK WITH YOU; ANYTHING YOU DO OR DO NOT DO IN RELIANCE ON AN AI RESULT, A PART NAME, A NAMEPLATE READING OR A MANUAL (INCLUDING DAMAGE TO PROPERTY, EQUIPMENT, PLANTS, LAWNS, TREES, POOLS, SURFACES OR FINISHES; HARM TO PEOPLE, PETS, LIVESTOCK, POLLINATORS OR THE ENVIRONMENT; AND FINES OR PENALTIES FOR USING A PRODUCT, AN AMOUNT OR A METHOD THAT AN AI RESULT SUGGESTED); MISSED APPOINTMENTS OR REMINDERS; DATA THAT CANNOT BE RECOVERED BECAUSE YOU LOST YOUR PHONE, YOUR PASSWORD AND YOUR RECOVERY CODE, BECAUSE A BACKUP WAS NOT TURNED ON OR NOT COMPLETE, OR BECAUSE A COMPANY OWNER DELETED THE COMPANY; THE ACTS OF OTHER MEMBERS OF A COMPANY ACCOUNT; ACCESS TO YOUR ACCOUNT BY SOMEONE USING YOUR DEVICE, PASSWORD OR INVITATION CODE; OR THE ACTS, FAILURES OR CONTENT OF APPLE, GOOGLE, OUR PROVIDERS OR ANY THIRD-PARTY WEBSITE.

THE LIMITS IN THIS SECTION APPLY TO EVERY KIND OF CLAIM, WHETHER BASED ON CONTRACT, NEGLIGENCE, STRICT LIABILITY OR ANY OTHER THEORY, AND THEY APPLY EVEN IF A REMEDY FAILS OF ITS ESSENTIAL PURPOSE. THE PRICES OF THE APP REFLECT THESE LIMITS, AND WE WOULD NOT OFFER THE APP WITHOUT THEM.

Who these limits protect. The disclaimers and limits in sections 16 and 17 also protect Kainapp LLC’s members, managers, employees and contractors, who are not personally responsible to you for the App beyond what the law requires. Any claim about the App must be brought against Kainapp LLC.

What these limits do not do. Nothing in these Terms excludes or limits a liability that cannot be excluded or limited under the law that applies to you. That includes, where the law so provides, liability for our own fraud, our intentional misconduct or our gross negligence, and any right that the law of your state says cannot be waived by agreement. Where the law of your state allows a limit only up to a certain point, the limits in this section apply up to that point and no further. This applies in particular to New Jersey, as the next paragraph explains.

New Jersey. If you are a New Jersey resident, the following provisions do not apply to you: (a) in section 16, the disclaimer of the implied warranties of merchantability and fitness for a particular purpose; (b) in section 17, the exclusion of our liability for our own negligence that causes injury to a person or damage to property, and the exclusion of punitive damages; (c) in section 18, the indemnity to the extent it covers a claim caused in any part by our negligence, fraud, intentional misconduct or breach of these Terms; and (d) in section 18, “Disputes with your customers and others”, the release and the waiver of California Civil Code section 1542. Every other provision of these Terms, including sections 16 to 18 apart from (a) to (d), section 21 (arbitration and class action waiver) and the jury waiver in section 22, applies to New Jersey residents.

18. Indemnification

You agree to defend, indemnify and hold us harmless from any claims, losses, damages and expenses (including reasonable attorneys’ fees) arising from: your services or work for your customers; Your Content; your invoices, estimates or collections; your violation of these Terms or of any law; any dispute between you and your customers or any third party; or, for a company account, the acts of its members and any dispute between the company and its members. (For New Jersey residents, section 17, “New Jersey”, lists exactly which provisions do not apply.)

This also includes claims arising from: taxes, including sales tax, that you owed or failed to collect, report or pay; how you classified, paid or treated a helper, technician, employee or contractor, and any tax form you did or did not file; photos or information about other people or their property that you recorded or shared; your use of a manual or other third-party content; messages you sent to your customers, from your phone or through our server (including the emails sent from the web office, and any charge, fine or penalty that our email provider or an authority imposes on us because of them); how you collected or tried to collect a debt, including under the Florida Consumer Collection Practices Act and similar laws; your use of, reliance on or sharing of any AI result, including a product, chemical, method or amount suggested by a photo tool, a part suggested by the parts assistant, a store found by Where to buy or a nameplate reading, and anything you put in a document or message for your customer based on it; payments you collected or tried to collect with the App, including refunds, disputes, chargebacks, returned bank payments, surcharges, the card and bank prices of Annex B, B4A and any claim by Stripe, a card network, a bank or your customer; work you did without a license, permit or authority you needed; any entry into a property or vehicle; and your use, application, storage or disposal of pesticides, fertilizers, chemicals, refrigerants or wash water.

This section does not apply to the extent a claim results from our own negligence, fraud, intentional misconduct or breach of these Terms.

How the indemnity works. If we ask you to defend us under this section, we will tell you about the claim promptly (a delay excuses you only to the extent it harms your defense), you may control the defense with lawyers we reasonably accept, and we may take part with our own lawyers at our own cost. You may not settle a claim in a way that admits fault for us, requires us to do or pay anything, or does not fully release us, without our written consent, which we will not refuse without a good reason. If you do not take up the defense within 15 days after we ask, we may defend the claim ourselves at your reasonable cost. Each of us will cooperate reasonably with the other.

Disputes with your customers and others. We are not a party to disputes between you and your customers, workers, company members, Stripe or other third parties. To the extent the law allows, you release Kainapp and its members, managers, employees and contractors from claims arising out of those disputes, except claims caused by our own negligence, fraud, intentional misconduct or breach of these Terms. If you are a California resident, you waive California Civil Code section 1542, which says: “A general release does not extend to claims that the creditor or releasing party does not know or suspect to exist in his or her favor at the time of executing the release and that, if known by him or her, would have materially affected his or her settlement with the debtor or released party.” This paragraph does not apply to New Jersey residents (see section 17, “New Jersey”).

19. Time limits for claims

These Terms do not shorten the time the law gives you or us to bring a claim. Any claim can be brought within the period set by the statute of limitations that applies to it. The time spent in the informal resolution described in section 21 does not count against that period.

20. Force majeure

We are not responsible for delays or failures caused by events beyond our reasonable control, such as natural disasters, power or internet outages, failures of third-party providers, labor disputes, government action or cyberattacks.

21. Dispute resolution, arbitration and class action waiver

Informal resolution first. Before filing any claim, you and we agree to try to resolve it informally. You agree to contact us at info@kainapp.com and we agree to contact you at the email on your account, and to try to resolve it informally for at least 30 days. The time limits for bringing a claim stop running during those 30 days.

What the notice of a dispute must contain. To start the informal resolution, the person or business with the claim must send a written notice, signed personally by that person or by an authorized representative of that business (a lawyer may also sign, together with the person), with: the name, the account email and contact information; a description of what happened and of the claim; and what is being asked for, including any amount. One notice covers one person or business. Either of us may ask for a call or a video meeting during the 30 days, and the person with the claim may bring a lawyer. Settlement offers made during this period are not shown to the arbitrator until after the decision. The 30 days start when a complete notice is received. If a notice is incomplete, we will tell you what is missing within 10 days.

Binding arbitration. If not resolved, any dispute arising from these Terms or the App will be resolved by binding individual arbitration administered by the American Arbitration Association (“AAA”) under its Consumer Arbitration Rules and its Consumer Fee Schedule, as in effect when the arbitration is filed, whether you are a person or a business (if the AAA decides that other AAA rules must apply instead, those rules apply, but the fees are still paid as described under “Fees” below), held by video, by telephone or on written submissions, or in person in Miami-Dade County, Florida or, where the rules or the law give you that right, near where you live. Either party may instead bring an individual claim in small claims court if it qualifies. Either party may seek an injunction in court for misuse of intellectual property.

Class action waiver. Disputes will be resolved only on an individual basis. You and we waive any right to a class, collective or representative action, and to a jury trial.

Opt-out. You may opt out of this section 21 by emailing us at info@kainapp.com within 30 days after you first accept these Terms, with your name, account email and a clear statement that you opt out of arbitration. You may send it from any email address; if it does not come from the email on your account, we may ask you to confirm it from that email, and the date you first sent it is the one that counts. Opting out does not affect the rest of these Terms.

If this section is found unenforceable, disputes will be resolved in the courts described in section 22.

What this means, in plain words. By agreeing to arbitration, you and we each give up the right to sue in court and to have a judge or a jury decide the dispute, except for the cases this section leaves to the courts. An arbitrator is a neutral person, not a judge. Arbitration is less formal than a court case, the exchange of evidence is more limited, and the review of an arbitrator’s decision by a court is very limited.

The law that governs this section. The Federal Arbitration Act governs the interpretation and enforcement of this section 21. The arbitrator decides the dispute and can award, on an individual basis, the same remedies a court could. A court, and not the arbitrator, decides whether this section 21 is valid and whether the class action waiver can be enforced.

Where the hearing takes place. If the rules of the American Arbitration Association or the law that applies to you give you the right to a hearing near where you live, the hearing will be held there. You can also choose to have it held by video, by telephone or on written submissions only.

Fees. If you start an arbitration, the most you will pay is the filing fee that the AAA Consumer Fee Schedule sets for an individual (currently $225), and we will reimburse it if you win. We pay every other AAA fee and all of the arbitrator’s compensation, under any AAA rules that apply, whether you are a person or a business. We pay each fee within 30 days after it is due. If the arbitrator decides that your claim was frivolous or brought for an improper purpose, the arbitrator may order you to pay fees as the AAA rules and the law allow. Each party pays its own lawyers unless the law or the arbitrator’s award says otherwise.

Requests for relief that benefits the public. If the law that applies to you does not allow you to waive the right to ask a court for an injunction whose main purpose is to protect the general public, then that request, and only that request, is separated from the arbitration and decided by a court, after the arbitration of your individual claims has ended. Everything else stays in arbitration. (For New Jersey residents, section 17, “New Jersey”, lists exactly which provisions do not apply.)

If the class action waiver cannot be enforced. If a court decides that the class action waiver cannot be enforced for a particular claim, that claim goes to court and is not arbitrated as a class, and the rest of this section continues to apply to every other claim.

Many similar claims at once. If 25 or more claims that are similar to each other are brought against us by the same lawyers or by lawyers or organizations working together, the Mass Arbitration Supplementary Rules of the American Arbitration Association apply to them. In addition, the lawyers for the claimants and we will each choose up to 5 claims to be arbitrated first, as test cases; while those are decided, the other claims wait; we will ask the AAA to defer the fees of the waiting claims, and we pay any fee the AAA still requires for them within 30 days after it is due; nothing in this paragraph makes any claimant pay more than the filing fee described under “Fees”, and the time limits for the waiting claims stop running; after the test cases, both sides will take part in one mediation, which we pay for, to try to resolve the remaining claims; and if any remain unresolved, they go forward in arbitration as these Terms describe, and any claimant may instead choose small claims court if the claim qualifies. While those claims wait their turn under those rules, the time limits for bringing them stop running.

Changes to this section. If we change this section 21, the change applies only to claims that arise after it takes effect, never to a claim that arose earlier, whether or not you had told us about it. We will ask you to accept the change in the App. If you do not want it, you may reject it by emailing info@kainapp.com within 30 days after we notified you; then the version of section 21 you accepted earlier keeps applying to you, and the rest of the new Terms still applies.

22. Governing law and venue

These Terms are governed by the laws of the State of Florida and applicable US federal law, without regard to conflict-of-law rules. Subject to section 21, any action will be brought exclusively in the state or federal courts located in Miami-Dade County, Florida, unless the law of your place of residence requires otherwise.

Jury waiver in court. If a dispute is decided in court instead of in arbitration (for example because you opted out of arbitration, or because section 21 does not apply to it), you and we waive the right to a trial by jury, to the extent the law allows such a waiver. This waiver does not apply where the law does not allow a jury waiver agreed before a dispute arises, for example in California and Georgia; it applies in New Jersey. (For New Jersey residents, section 17, “New Jersey”, lists exactly which provisions do not apply.)

Choosing Florida law does not take away any protection that the law of the state where you live gives you and that cannot be waived by agreement. If the law of your state says that a dispute with you must be decided under that state’s law or in that state’s courts, that law applies to you, and the rest of these Terms stays in effect.

23. Apple App Store terms

If you downloaded the App from the Apple App Store:

If you downloaded the App from Google Play, Google’s terms for Google Play also apply to your use of their store.

24. General

25. Changes to these Terms

We may change these Terms only for valid reasons, such as new features, changes in the law, security, or changes in our providers, prices or fees, and only in good faith. For a material change, which includes any change to sections 4 to 6, 10, 16 to 22 or 25, to Annex B, and anything that reduces your rights or increases your obligations or your costs, we will (1) email you, with a subject line that says that our Terms are changing, a short summary of what changes, a link to the new version and the date it takes effect; (2) show you the same summary in the App; and (3) give you at least 30 days before the change takes effect. For an increase in the price of a plan, we send two separate notices: this notice, at least 30 days before; and the notice described in section 6 (“Price changes”, and for CORPORATE “Price changes” under CORPORATE plan), no fewer than 7 and no more than 30 days before the new price first applies to you, with the request for your consent. Neither notice replaces the other, and the new price never applies without your consent. On or after that date, the App on your phone will ask you to accept the new version by ticking a box that is not ticked in advance and tapping “I agree” (the web office does not ask; open the App on your phone to accept). Until you accept, the earlier version keeps applying to you. If you have a paid plan, you keep every feature of it until the end of the period you already paid for. After that, if you still have not accepted, we may limit the App to viewing, exporting and deleting your records, collecting payments for invoices already sent and managing or cancelling your plan. We will refund (CORPORATE) or credit as described in section 6 (Apple and Google) any charge made for a period in which the App was limited this way. If you do not accept, you can cancel your plan and stop online payments; for a CORPORATE plan, if you cancel because of the change before it takes effect, we refund the unused days of the current billing period. Changes that only benefit you, or that are required by law or by a provider on a shorter deadline, may take effect sooner, and we will tell you. We keep a record of which version you accepted and when. The version number and date at the top show which version you are reading.

A change does not apply backwards. It does not change the rules for a charge or a payment already made, and it does not apply to any claim that arose before it took effect. We keep the earlier versions of these Terms and will send you the version you accepted if you ask for it.

26. Contact

Kainapp LLC, Florida, USA · info@kainapp.com

Mailing address: Kainapp LLC, 19591 NE 10th Ave, Bay C, North Miami Beach, FL 33179, USA.

Notice for California users. Under California Civil Code section 1789.3, California users are entitled to the following notice. The App is provided by Kainapp LLC, at the mailing address and email shown above. The charges for the App are described in sections 4, 5 and 6. If you have a complaint about the App or want more information about its use, write to us at info@kainapp.com. You may also contact the Complaint Assistance Unit of the Division of Consumer Services of the California Department of Consumer Affairs in writing at 1625 North Market Blvd., Suite N 112, Sacramento, California 95834, or by telephone at (800) 952-5210.

Annex A. Data processing terms

This Annex is part of these Terms. It applies to the personal information of other people that you, or the company you belong to, put into the App: your customers, the people who work with you, and the members of a company account. In this Annex that information is called “Customer Personal Information”, and “you” means the user or the company that decides what is recorded.

Annex B. Online payments terms (Get paid online)

Updated in November 2026: online payments through Stripe are no longer offered and cannot be turned on. This Annex stays in force only for payment links and payments made before that change. To get paid, use QuickBooks or your own payment options (Annex D).

This Annex is part of these Terms. It applies if you turn on online payments in the App (Settings → Get paid online) and send invoices with a payment link. If you never turn them on, it does not apply to you. If something in this Annex conflicts with another part of these Terms, this Annex controls for online payments.

Added in October 2026: B4A, an optional setting that lets your customer pay the cost of a card or bank payment instead of you. It is off unless you turn it on, and it only applies if you turn it on. Later in October 2026 we rewrote B4A to match how the App now works: every price on the document is the card price, which is the regular price, with discounts for paying by bank, cash or check; it applies only to documents of $25.00 or more; and it now says what you must and must not do, that we do not promise it is allowed where you work, and when we may change or stop it. We also added: that Stripe’s page may offer your customer to save a card with Stripe Link (B4); short-version wording that matches B4A (B5); that we write the description Stripe shows to your customer, and that refunds are made only through Stripe (B7); the rules for sending invoices by email from our server (B8); that an Owner’s personal and company invoices use one Stripe account, that we may close a single payment link at once if we suspect fraud, and the dispute levels set by Stripe and the card networks (B9); and Form 1099-K and your bookkeeping (B11).

B1. What online payments are and who can use them

B2. Your Stripe account and Stripe’s terms

B3. Kainapp never receives your money

B4. How a payment works

B4A. Optional: “Your client pays the fee” (two prices)

This part is written as simply as we can. It only applies if you turn this setting on.

B5. What online payments cost

The short version (the same text the App shows before you turn online payments on; at that moment “Your client pays the fee” is always off):

  • Card: 3.2% + $0.30 per payment. Cards from outside the US cost 1.5% more.
  • Bank (ACH): 1% + $1.50 per payment. Above $625, Stripe’s part stops growing. Examples: a $300 invoice costs $4.50; a $2,000 invoice costs $10.50.
  • The $1.50 is Stripe’s fee for checking your customer’s bank account. Stripe charges it each time your customer connects a bank account, even if the payment is not completed.
  • If a customer disputes a payment, Stripe charges $15 (and $15 more if you answer the dispute; that second fee comes back if you win).
  • Your client pays the invoice total, unless you turn on “Your client pays the fee” (B4A). These fees come out of what you receive. They include Stripe’s fees and the VertixOps fee (0.3% for cards, 0.2% for bank payments). If you refund a payment, the fees are not returned.

Online payments are included in PREMIUM (including its free trial) and CORPORATE, with no extra monthly charge, and your customer pays no fee unless you turn on “Your client pays the fee” (B4A). Three kinds of charges can come out of your Stripe balance: (1) for each successful payment, Stripe’s payment fee, which Stripe sets and charges under your agreement with Stripe, and the VertixOps fee, which is Kainapp’s fee for the service; Stripe deducts both from the payment before it reaches your Stripe balance; (2) Stripe’s fee of $1.50 for each successful instant verification of a customer’s bank account, which Stripe charges to your Stripe account when your customer connects a bank account on Stripe’s page, whether or not the payment is then completed, succeeds or is later returned, and again each time a customer connects a bank account for a new attempt; and (3) Stripe’s other fees, such as dispute fees, listed below. Because anyone who has your payment link can start a bank payment, send links only to the customer who owes the invoice (B1). We may limit the number of bank payment attempts that can be started from one link.

Before you turn online payments on, the App shows you the totals below, including Stripe’s bank-verification fee, and asks you to agree to them by ticking a box that is not ticked in advance. We keep a record of that agreement (the version of these Terms, the date and time and the account), as described in the Privacy Policy.

The VertixOps fee (Kainapp’s fee):

Stripe’s fees (Stripe’s published standard prices for US accounts as of October 2026, which Stripe can change and which may be different for your account if you agreed different prices with Stripe; the current list is at stripe.com/pricing):

What that means in total (with Stripe’s standard prices above):

B6. Payouts

B7. Refunds, disputes, returned payments and negative balances

B8. What you may not use online payments for

B9. Stopping online payments

B10. Errors, records and legal holds

B11. Taxes and reporting

B12. Card and bank security

B13. Responsibility

Annex C. Information for people who pay an invoice through VertixOps

This Annex explains how our payment page works for the person who pays. It is shown, in English and Spanish, as a link on every payment page. The Spanish version follows the English one (“Anexo C”); if they differ, the version more favorable to the payer applies. It does not ask the payer to give up any right, and it does not apply arbitration to the payer.

Anexo C (en español). Información para quienes pagan una factura a través de VertixOps

Este Anexo explica cómo funciona nuestra página de pago para la persona que paga. Se muestra como enlace en cada página de pago. No le pide a quien paga que renuncie a ningún derecho y no le aplica el arbitraje. Si esta versión y la versión en inglés no coinciden, se aplica la más favorable para quien paga.

  • A quién le pagas. La página de pago la ofrece Kainapp LLC, que hace VertixOps, para el negocio cuyo nombre aparece en ella. Ese negocio te envió la factura, es el vendedor y recibe tu pago a través de su propia cuenta de Stripe. Kainapp no es el vendedor, no es parte de tu acuerdo con el negocio, no recibe tu pago y no puede reembolsarlo.
  • Preguntas, reclamos y reembolsos sobre la factura, el trabajo, el monto, un reembolso o una cancelación se dirigen al negocio. Esta página no afecta tus derechos frente al negocio, tu derecho a disputar un pago con tarjeta ante el emisor de tu tarjeta ni tu derecho a disputar un débito bancario ante tu banco.
  • El pago en sí se hace en una página de Stripe, bajo los términos y la política de privacidad de Stripe. Para un pago desde tu banco, Stripe te muestra la autorización de ese único débito; para detenerlo antes de que se procese, comunícate de inmediato con el negocio y sigue las instrucciones que te da Stripe. Solo se pueden usar bancos que Stripe pueda conectar en el momento; si el tuyo no, puedes pagar con tarjeta.
  • Revisa antes de pagar. Verifica que el nombre del negocio, el número de factura y el monto sean correctos antes de pagar, y no pagues una factura que no debes. Si recibiste un enlace por error, cierra la página y avísale al negocio.
  • ¿Factura sospechosa? Si no reconoces al negocio, nunca pediste el trabajo o crees que la factura o el enlace son falsos, no pagues. Avísanos a info@kainapp.com, con el enlace o el email que recibiste. Podemos cerrar el enlace mientras lo revisamos. Los datos de tu tarjeta o de tu banco se escriben siempre en las páginas de Stripe, nunca en un email ni en un mensaje de texto.
  • Cuándo cuenta tu pago. Cuando tu pago en esta página se completa, cuenta como pago al negocio por esa factura, por el monto que pagaste. Es un pago al negocio, no a Kainapp. Un pago ya iniciado, sobre todo un pago desde el banco, puede no poder detenerse; si pagaste por error, comunícate de inmediato con el negocio.
  • Cargos de tu banco. Los cargos que te cobre tu propio banco o el emisor de tu tarjeta (por ejemplo, por un pago bancario devuelto o una transacción en el extranjero) son entre tú y tu banco. Esta página cobra exactamente el monto que muestra antes de que pagues. Los negocios que usan VertixOps se comprometen a no agregar un recargo ni un cargo por conveniencia a una factura pagada en esta página.
  • Dos precios: tarjeta, y uno más bajo para banco, efectivo o cheque. Algunos negocios eligen mostrar todos los precios de la factura como precio con tarjeta, que es el precio normal, con un descuento si pagas desde una cuenta de banco y un descuento mayor si pagas en efectivo o con cheque. El precio con tarjeta es el total de la factura e incluye lo que le cuesta al negocio cobrar con tarjeta, incluidas las comisiones de su procesador de pagos (Stripe) y de VertixOps. Los precios más bajos son un descuento, porque esas formas de pago le cuestan menos al negocio. El precio con tarjeta es el mismo para tarjetas de crédito y de débito y para todas las marcas de tarjeta. Tú eliges cómo pagar, y la página te muestra el monto exacto de cada opción antes de pagar. Para pagar en efectivo o con cheque, comunícate con el negocio. Si te cobraron más que el precio que se mostraba para la forma en que pagaste, o se agregó un cargo que la página no mostraba, comunícate con el negocio, y también puedes avisarnos a info@kainapp.com.
  • Lo que le informamos al negocio. Cuando pagas, le informamos al negocio, por email y en su App, que la factura se pagó, el monto, la fecha y si se pagó con tarjeta o desde una cuenta bancaria. Nunca recibimos ni compartimos los datos de tu tarjeta o de tu banco.
  • Guardar tu tarjeta con Stripe Link. La página de Stripe puede ofrecerte guardar tus datos de pago con Link, un servicio propio de Stripe, para pagar más rápido en los negocios que lo aceptan. Es tu decisión y es entre tú y Stripe. Ni el negocio, a través de VertixOps, ni Kainapp pueden ver ni volver a usar los datos guardados de tu tarjeta.
  • No te contactamos. Kainapp nunca usa tu email, tu número de teléfono ni tu visita a esta página para contactarte con fines propios ni para hacerte publicidad, y nunca los vende ni los comparte.
  • Uso de la página. No hagas mal uso de la página, por ejemplo con intentos automáticos, pruebas de tarjetas o interfiriendo con ella. Podemos limitar los intentos repetidos. Una página de pago de Stripe que dejas abierta vence después de aproximadamente un día; abre el enlace otra vez para empezar de nuevo. Para proteger al negocio de los cargos por verificación del banco, cada enlace permite solo unas pocas conexiones de banco por día.
  • Responsabilidad. El negocio que te envió la factura vende los bienes o servicios y es responsable de ellos. Esta página no limita ningún derecho que tengas frente al negocio, frente a Stripe o frente a Kainapp.
  • Tu información en esta página se trata como se describe en la sección 9 de nuestra Política de Privacidad (“Si pagas una factura en una de nuestras páginas de pago”). Contacto: info@kainapp.com.

Annex D. QuickBooks and your own payment options

This Annex is part of these Terms. It applies only if you connect your own QuickBooks Online account or add your own payment options in the App (Settings → Get paid online). Added in November 2026 for these new optional features; it does not change Annex B, which still covers payments through Stripe.