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deepstint Terms and Conditions

Last updated: September 2026

deepstint is a personal focus and time-tracking tool, provided by Cristobal Dupuis ("deepstint," "we," "us," or "our"), operating as an individual out of Ontario, Canada. These Terms and Conditions ("Terms") govern your use of deepstint.com, the deepstint web app at app.deepstint.com, and the deepstint Android app (together, the "Service"). By creating an account, installing the app, or otherwise using the Service, you agree to these Terms. If you don't agree, don't use the Service.

Our Privacy Policy explains what data we collect and how we handle it, and is part of these Terms by reference. Where this document and the Privacy Policy overlap on data handling, the Privacy Policy is the more detailed source.

1. Who can use deepstint

You must be at least 18 years old to use the Service. By using deepstint you confirm you meet that requirement and that you have the legal capacity to agree to these Terms. deepstint is not directed at children, and we do not knowingly allow anyone under 18 to create an account.

2. The Service, in plain terms

deepstint is a Pomodoro-style timer and time-tracking tool. It works fully offline, storing your data in your browser's or device's local storage. Signing in is optional and adds sync across your devices via an account. Some features (calendar display, push notifications at the end of a focus session, and paid plans) are opt-in and off by default.

deepstint is a productivity tool, not a medical device or a treatment for ADHD or any other condition. It makes no clinical claims and isn't a substitute for professional medical, psychological, or therapeutic advice. If you need that kind of support, please seek it from a qualified professional.

3. Accounts

You can use deepstint without an account — in that mode your data never leaves your device. If you choose to sign in, you're responsible for maintaining the confidentiality of your account and for all activity that happens under it. Tell us right away at security@deepstint.com if you suspect unauthorized use of your account.

Access codes and additional seats (where offered) are issued for your own use or for people you've explicitly shared them with, not for public redistribution or resale. We may revoke an access code that's being shared or used outside its intended scope.

4. Your content — task names, priorities, journal entries, and the rest

Everything you type into deepstint — task names, priorities, tags, journal entries, and similar — is yours. We don't claim any ownership over it, and by default it never leaves your device: it isn't stored on our servers, we don't read it, and we don't use it to train anything. If you turn on sync, that same content is stored in your own account so it can move between your own devices; it is still not something we access, analyze, or share. There are a small number of narrow, opt-in exceptions — including stint-end push notifications (the server learns only when a focus session ends, nothing about what it was for) and the AI journal-summary and auto-slice features (which send only the specific text you act on to our AI provider, only when you tap that button) — all listed in full in our Privacy Policy.

deepstint doesn't currently have public sharing, comments, or any feature that shows your content to other users. If that ever changes, this section will be updated before it ships, and any such feature will need your explicit opt-in.

You're responsible for what you type into the Service. Don't enter content that is illegal, infringes someone else's rights, or that you don't have the right to enter. Because we don't monitor your content, we can't and don't promise to catch or remove anything you put in — that responsibility stays with you.

If you send us feedback, bug reports, or suggestions (for example, through feedback@deepstint.com), you agree we can use that feedback to improve deepstint without owing you anything for it. We won't publish your feedback attributed to you without asking first.

5. Acceptable use

You agree not to:

  • Use the Service for anything illegal, or to violate anyone else's rights.
  • Try to bypass, disable, or interfere with entitlement checks, access codes, seat limits, rate limits, or other controls we've put in place.
  • Reverse engineer, decompile, or attempt to extract the source code of the Service, except to the extent applicable law gives you that right despite this restriction.
  • Scrape, crawl, or programmatically extract data from the Service outside of features we explicitly provide for that purpose.
  • Interfere with or disrupt the integrity or performance of the Service, or attempt to gain unauthorized access to it or to other users' accounts or data.
  • Resell, sublicense, or provide the Service to third parties as your own.

We may suspend or terminate access for accounts that violate this section.

6. Subscriptions and payments

deepstint is free to use during the public beta. When paid plans are active, pricing is shown at checkout and on deepstint.com before you pay. Payments are processed by Stripe; we never see or store your full card details. Subscriptions renew automatically at the interval you choose until you cancel. You can cancel any time through the billing portal linked from Settings in the app — cancellation stops future renewals but doesn't refund the current billing period unless we say otherwise or the law where you live requires it.

We may change prices for future billing periods with reasonable notice. Continuing to use a paid plan after a price change takes effect means you accept the new price.

7. Intellectual property

The deepstint name, logo, and the Service's design, code, and content (other than content you provide) belong to us or our licensors and are protected by copyright, trademark, and other laws. We grant you a personal, non-exclusive, non-transferable, revocable license to use the Service for your own focus and time-tracking purposes. That license doesn't include the right to copy, modify, distribute, sell, or create derivative works from the Service itself.

8. Third-party services

deepstint relies on a small set of third-party services to work: Supabase (account and sync storage), Cloudflare (hosting), Stripe (payments, where enabled), Google (optional sign-in and optional read-only calendar display), Plausible (privacy- friendly, cookieless website analytics on deepstint.com only — not inside the app), and Google Tag Manager (loads optional analytics/advertising tools on deepstint.com only, and only after you consent via the cookie banner). Your use of features backed by these services is also subject to those providers' own terms. We don't control, and aren't responsible for, those third parties' own acts or downtime. More detail on what each service sees is in our Privacy Policy.

9. Disclaimers

The Service is provided "as is" and "as available," without warranties of any kind, whether express, implied, or statutory, including implied warranties of merchantability, fitness for a particular purpose, and non-infringement, except where a warranty can't be excluded under the law that applies to you. We don't warrant that the Service will be uninterrupted, error-free, or that any data loss can never happen — which is exactly why local export/import and offline-first storage exist, so you're never solely dependent on us for your own data.

deepstint is not a medical, psychological, or therapeutic product, and nothing in the Service should be read as medical or clinical advice or a promised outcome.

10. Limitation of liability

To the maximum extent permitted by applicable law, deepstint and Cristobal Dupuis will not be liable for any indirect, incidental, special, consequential, or punitive damages, or any loss of data, profits, or revenue, arising from your use of, or inability to use, the Service, even if we've been advised of the possibility of those damages. To the maximum extent permitted by applicable law, our total liability to you for any claim arising from these Terms or the Service is limited to the greater of (a) the amount you paid us in the 12 months before the claim, or (b) CAD $100.

Nothing in these Terms limits liability that can't be limited under the law that applies to you — for example, liability for our gross negligence, willful misconduct, or death or personal injury caused by our negligence, where applicable law says that liability can't be excluded.

11. Indemnification

You agree to indemnify and hold us harmless from any claims, damages, losses, and expenses (including reasonable legal fees) arising from your violation of these Terms, your misuse of the Service, or content you enter that violates someone else's rights or the law.

12. Termination

You can stop using deepstint at any time. You can delete your account and data by emailing privacy@deepstint.com (see the Privacy Policy for details), or, if you use deepstint without an account, simply by clearing your browser or device storage.

We may suspend or terminate your access to the Service if you materially violate these Terms, including the acceptable-use rules in Section 5, or if required by law. Where practical, we'll give you notice and a chance to fix the issue first. Sections that by their nature should survive termination — including Sections 4 (content and feedback), 7 (intellectual property), 9–11 (disclaimers, liability, indemnification), and 13 (dispute resolution) — continue to apply after your access ends.

13. Dispute resolution

If a dispute comes up, please email us first at legal@deepstint.com — most things are easier to sort out directly than through a formal process, and we mean that.

If that doesn't resolve things, and to the extent permitted by the law that applies to you, you and deepstint agree to resolve any remaining dispute through binding, individual arbitration rather than in court, except that either of us may bring an individual claim in small claims court. There is no right or authority for any dispute to be brought as a class, consolidated, or representative action, and the arbitrator can't combine more than one person's claims.

This doesn't apply to everyone. Some jurisdictions — including Ontario and other Canadian provinces, and some U.S. states — don't allow mandatory pre-dispute arbitration clauses or class-action waivers in consumer contracts. If that's the law that applies to you, this Section 13's arbitration and class-waiver terms don't apply to you, and any dispute will instead be handled by the courts named in Section 14, with any consumer-protection rights you have under your local law fully preserved. Nothing here limits a right that your local consumer-protection law says can't be waived.

14. Governing law and venue

These Terms are governed by the laws of the Province of Ontario and the federal laws of Canada applicable in Ontario, without regard to conflict-of-law rules. Subject to Section 13, you and deepstint agree that any dispute not resolved by arbitration (or excluded from arbitration under Section 13) will be brought exclusively in the courts located in Ontario, Canada, and you consent to that jurisdiction and venue. If you're a consumer in a jurisdiction whose law entitles you to bring a claim in your own local courts instead, that right is preserved and this section doesn't take it away.

15. Changes to the Service

We can add, change, or remove features, and we can pause or shut down the Service entirely. Where reasonably possible, we'll give notice of changes that materially reduce what a paid plan includes. Optional services (analytics, calendar display, push notifications, payments) ship complete but off by default, and turning one on is a configuration change on our end, not a new agreement from you — the terms governing that feature are the ones already in these Terms and the Privacy Policy.

16. Changes to these Terms

We may update these Terms from time to time. If we make a material change, we'll update the "Last updated" date above and, where practical, let you know in the app or by email. Continuing to use the Service after a change takes effect means you accept the updated Terms. If you don't agree with a change, please stop using the Service and, if applicable, cancel your subscription.

17. General

If any part of these Terms is found unenforceable, the rest stays in effect and the unenforceable part will be read to accomplish its intent as closely as the law allows. Our failure to enforce a right under these Terms isn't a waiver of it. You can't assign these Terms without our consent; we may assign them in connection with a merger, acquisition, or sale of assets. These Terms, together with the Privacy Policy, are the entire agreement between you and deepstint about the Service, and replace any earlier agreements on the same subject.

18. Contact

General questions: feedback@deepstint.com
Privacy / data requests: privacy@deepstint.com
Legal: legal@deepstint.com