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Terms & Conditions

App: Tavy · Effective date: September 3, 2026 · Last updated: September 3, 2026

These Terms & Conditions (“Terms”) govern your access to and use of the Tavy mobile application (the “App”) provided by Matjahu (“we”, “us”, or “our”). By downloading, accessing, or using Tavy, you agree to be bound by these Terms. If you do not agree, do not use the App.

1. Eligibility

You must be at least 13 years old (or the minimum age of digital consent in your jurisdiction) to use Tavy. By using the App, you represent that you meet this requirement and that the information you provide is accurate.

2. Your Account

  • You are responsible for maintaining the confidentiality of your account credentials and for all activity under your account.
  • You agree to provide accurate information and to keep it up to date.
  • You may sign in using Email/Password, Google Sign-In, or Apple Sign-In, or continue as a guest with your data kept on your device only. You are responsible for your use of these third-party sign-in providers under their respective terms.
  • Notify us immediately of any unauthorized use of your account.

3. License to Use the App

We grant you a limited, non-exclusive, non-transferable, revocable license to use Tavy for your personal, non-commercial use, subject to these Terms. You may not:

  • Copy, modify, distribute, sell, or lease any part of the App.
  • Reverse engineer, decompile, or attempt to extract the source code, except where permitted by law.
  • Use the App in any unlawful manner or in a way that could damage, disable, or impair the service.
  • Attempt to gain unauthorized access to our systems, other users' accounts, or the backend infrastructure.

4. Price

Tavy is currently offered free of charge. There is no subscription, no paid tier, and no in-app purchase. If we introduce paid features in the future, we will update these Terms and make the pricing and billing conditions clear before you are asked to pay for anything.

5. Health and Activity Data

  • Tavy reads your step counts from Health Connect (Android) or Apple HealthKit (iOS), and from your device's step counter sensor as a fallback, only after you grant permission. You can revoke that permission at any time in your device settings; the App will keep working, but it will stop reading new step data.
  • Tavy only reads step counts. It never writes to, modifies, or deletes data in Health Connect or Apple Health, and it does not request other health categories.
  • Step counts are estimates. They depend on your device, its sensors, where you carry it and the accuracy of the health store, and derived values (distance, calories, active minutes) are estimates on top of estimates. Do not rely on them for any medical, clinical, or fitness-critical purpose.
  • Tavy is a general-purpose activity and motivation tool. It is not a medical device and does not provide medical, psychological, or professional advice. Consult a qualified professional before starting or changing a physical activity routine.

6. Friends, Leaderboards and Fair Play

  • Friends and leaderboards are optional. If you use them, other users can see your display name, avatar and step totals as described in the Privacy Policy. Do not use a display name or avatar you do not have the right to use, or one that is offensive or impersonates someone else.
  • A friendship requires both people to accept it, and either person may end it at any time.
  • Only step counts read from Health Connect or Apple HealthKit are eligible to score in a leaderboard. Readings from the raw device sensor are shown to you but never published to a ranking.
  • You agree not to falsify step data — for example by mechanically shaking or agitating your device, using automation, tampering with the health store, or injecting synthetic data. We apply plausibility limits and may discard implausible readings, remove leaderboard entries, or suspend accounts that manipulate them.

7. User Content

  • You retain ownership of the content you create in the App (your goal, profile, progress and related data) (“User Content”).
  • You grant us a limited license to store, process, and synchronize your User Content solely to provide the App's functionality, including showing your step totals to friends and leaderboards where you have chosen to take part.
  • You are solely responsible for your User Content and for backing up any important information. We are not liable for any loss of User Content.

8. Acceptable Use

You agree not to use Tavy to:

  • Violate any applicable law or regulation.
  • Infringe the rights of others, or harass, impersonate or abuse other users.
  • Distribute malware or interfere with the App's operation or security.
  • Circumvent usage limits, anti-cheat measures, or security features.

We reserve the right to suspend or terminate accounts that violate these Terms.

9. Intellectual Property

The App, including its design, logos, trademarks, text, graphics, and software (excluding your User Content), is owned by us or our licensors and is protected by intellectual property laws. These Terms do not grant you any rights to our trademarks or branding.

10. Third-Party Services

Tavy integrates third-party services, including Google Firebase, Google Sign-In, Apple Sign-In, Health Connect and Apple HealthKit. Your use of these services may be subject to their own terms and privacy policies. We are not responsible for the practices or content of third-party services.

11. Availability and Changes to the Service

  • We strive to keep the App available but do not guarantee uninterrupted or error-free operation.
  • We may modify, suspend, or discontinue the App or any of its features at any time, with or without notice.
  • We may update the App, and you may need to install updates to continue using it.

12. Disclaimer of Warranties

The App is provided “as is” and “as available”, without warranties of any kind, express or implied, including merchantability, fitness for a particular purpose, and non-infringement. We do not warrant that the App will meet your requirements or be secure, uninterrupted, or error-free, nor that step counts, streaks, or leaderboard positions will be accurate or complete.

13. Limitation of Liability

To the maximum extent permitted by law, we shall not be liable for any indirect, incidental, special, consequential, or punitive damages, or any loss of data, profits, or goodwill, arising from your use of or inability to use the App, including any injury or health consequence arising from physical activity you undertake while using it. Our total liability for any claim relating to the App shall not exceed the amount you paid us, if any, in the twelve (12) months preceding the claim.

Some jurisdictions do not allow certain limitations, so some of the above may not apply to you.

14. Termination

  • You may stop using the App and delete your account at any time.
  • We may suspend or terminate your access if you violate these Terms or for any lawful reason.
  • Upon termination, the licenses granted to you end. Provisions that by their nature should survive (e.g., intellectual property, disclaimers, limitation of liability) will remain in effect.

15. Governing Law and Dispute Resolution

These Terms are governed by the laws of Spain, without regard to conflict-of-law principles. Any disputes shall be subject to the exclusive jurisdiction of the courts of Spain, unless mandatory consumer protection laws in your country of residence provide otherwise.

16. Changes to These Terms

We may update these Terms from time to time. Material changes will be posted here with an updated “Last updated” date. Your continued use of Tavy after the changes take effect constitutes acceptance of the revised Terms.

17. Contact Us

For questions about these Terms, contact us at: