Terms of Service
Last updated 17 August 2026
These terms form the contract between you and Fabio Lima Sant Ana, trading as Inkprint OS. By creating an account or using the service you agree to them. If you do not agree, do not use the service.
Who you are contracting with
- Trading name
- Inkprint OS
- Legal name
- Fabio Lima Sant Ana
- Registration
- CPF 225.103.258-41
- Entity type
- Sole trader (pessoa física)
- Registered address
- Rua Primo Torquato, 122, Residencial Moema, Apto. 12, Bloco 1, Jardim Itnen, Araraquara - SP, 14806-108, Brazil
- Telephone
- +55 16 99750-7256
1What the service is
A web-based subscription service that analyses submitted text to estimate the likelihood it was generated by an artificial intelligence model, and rewrites text on request. Delivered entirely online, with no physical goods.
The service is delivered entirely online. There are no physical goods, no shipping and no delivery period: access begins immediately once payment is confirmed.
2Who may use it
You must be at least 16 years old, or the minimum age of digital consent in your country if that is higher. If you are under 18 you need permission from a parent or guardian.
If you use the service on behalf of an organisation, you confirm that you are authorised to bind that organisation to these terms.
You may not use the service if you are located in, or ordinarily resident in, a country subject to comprehensive trade sanctions, or if you appear on any restricted-party list that applies to us or to our payment processor.
3Accounts
Some features work without an account. For the rest you sign in with a link sent to your email address, so there is no password to store or lose. You are responsible for keeping access to that mailbox secure, and for everything done through your account.
Tell us at support@inkprintos.com if you believe someone else has access to your account.
4Plans, prices and what you are charged
Prices are shown and charged in USD. Your bank or card issuer may apply its own conversion rate and foreign transaction fee, which we neither set nor receive.
- Free. No charge, no card required. Limited to 5,000 words of detection and 300 words of rewriting per calendar month.
- Pro, monthly. $12.00 USD charged each month in advance.
- Pro, annual. $96.00 USD charged each year in advance, which works out at $8 per month.
Subscriptions renew automatically at the end of each billing period until you cancel. We charge the payment method on file on the renewal date. If a charge fails we may retry it and, if it keeps failing, suspend Pro features until it succeeds.
Prices exclude taxes unless stated otherwise at checkout. Where we are required to collect VAT, GST or a similar tax, it is added at checkout and shown before you pay.
We may change prices. Existing subscribers get at least 30 days' notice by email before a change takes effect, and the new price applies from the next renewal. If you do not want to pay it, cancel before that date.
5Cancelling and getting money back
You can cancel at any time from your dashboard, in two clicks. Cancelling stops the next renewal; you keep Pro until the end of the period you have already paid for.
We offer a 14-day refund on a first Pro payment. Consumers in Brazil additionally have 7 days to withdraw under article 49 of the Consumer Code, and consumers in the European Union and the United Kingdom have 14 days, subject to the conditions set out in the Refund and Cancellation Policy, which forms part of these terms.
6Your text stays yours
You keep every right you already had in the text you submit. You give us a narrow, non-exclusive licence to process it for one purpose only: producing the result you asked for and returning it to you.
We do not use your text to train models, we do not sell it, and we do not share it with anyone except the subprocessors listed in the subprocessor list, each of which processes it only to deliver the result.
You confirm that you hold the rights to the text you submit, or permission from whoever does. You are responsible for what you upload.
7What you may not do
The Acceptable Use Policy forms part of these terms. Read it. It is short, and one part of it matters more than anything else here: a detection score is not evidence of misconduct by a person, and the service must not be used to make automated accusations.
8What the results are, and are not
The service returns a statistical estimate. It does not, and cannot, prove who wrote a piece of text. Results can be wrong in both directions, and the Accuracy Disclaimer sets out exactly where and why.
You accept that any decision you take about a person, a submission, a grade, a publication or an employment matter on the basis of a result is your decision and your responsibility. We are not a party to it.
9Our intellectual property
The software, the detection engine, the name Inkprint OS, the design and the written content of this site belong to us. Your subscription buys the right to use the service, not ownership of any part of it.
You may not copy, decompile or reverse engineer the service, scrape it, resell access to it, or use it to build a competing detection product, except where that restriction is void under the law that applies to you.
10Availability
We aim to keep the service running but we do not promise uninterrupted availability. We may take it down for maintenance, and we may change or discontinue features. If we discontinue a paid feature materially, we will tell existing subscribers by email and refund the unused part of the period on request.
11Suspension and termination
We may suspend or close an account that breaks these terms or the Acceptable Use Policy, that is being used to attack the service, or where we are legally required to. Where the breach is capable of being fixed and no immediate harm is being done, we will ask you to fix it first.
If we close a paid account for reasons other than a breach by you, we refund the unused part of the current period.
You may close your account at any time by writing to us.
12No warranty
To the fullest extent permitted by law, the service is provided as it is and as it is available, without warranties of any kind, whether express or implied, including any implied warranty of merchantability, fitness for a particular purpose, accuracy, or non-infringement.
Nothing in these terms removes rights that consumer protection law gives you and cannot be waived by contract, including under the Brazilian Consumer Code.
13Limitation of liability
To the fullest extent permitted by law, our total liability arising out of or in connection with the service is limited to the greater of the amount you paid us in the twelve months before the event giving rise to the claim, or fifty USD.
We are not liable for indirect or consequential loss, loss of profit, loss of data, loss of reputation, or for academic, disciplinary, editorial or employment consequences arising from a decision taken on the basis of a result.
These limits do not apply to liability for fraud, for wilful misconduct, or to any liability that cannot be limited under applicable law.
14Indemnity
You agree to hold us harmless against claims brought by a third party that arise from your use of the service in breach of these terms, from text you submitted that you did not have the right to submit, or from an accusation you made on the basis of a result.
15Changes to these terms
We may update these terms. For material changes we give at least 30 days' notice by email to account holders and post the new version here with a fresh date. Continuing to use the service after that date means you accept the new version. If you do not, cancel before it takes effect.
16Governing law and disputes
These terms are governed by the laws of Brazil. Disputes are subject to the courts of Araraquara, São Paulo, Brazil.
If you are a consumer, this does not deprive you of the protection of the mandatory consumer law of the country where you live, and you may bring proceedings in the courts of that country where the law allows it. Brazilian consumers may bring proceedings in their own domicile under article 101 of the Consumer Code.
Before starting proceedings, please write to legal@inkprintos.com. Most disputes are a misunderstanding and are settled in a day.
17General
If any clause is found unenforceable, the rest stays in force. Our not enforcing a term on one occasion does not waive it. You may not transfer your rights under these terms without our consent; we may transfer ours as part of a sale or reorganisation of the business, on notice to you.
These terms, together with the Privacy Policy, the Cookie Policy, the Refund and Cancellation Policy, the Acceptable Use Policy and the Accuracy Disclaimer, are the whole agreement between us.
18How to reach us
Fabio Lima Sant Ana, CPF 225.103.258-41. Write to legal@inkprintos.com for legal notices and support@inkprintos.com for everything else. Full postal address and telephone number are at the top of this page and on the contact page.
Questions about this document
Write to legal@inkprintos.com. We answer within 48 hours on business days.