Terms of Service

Effective Date: March 24, 2026

Important: OneFast is a wellness and informational tool. It is not a medical device and does not provide medical advice. Always consult a healthcare professional before beginning any fasting regimen, especially fasts exceeding 48 hours.

1. Acceptance of Terms

By downloading, installing, or using the OneFast application ("the App"), you agree to be bound by these Terms of Service ("Terms"). If you do not agree to these Terms, do not use the App.

These Terms constitute a legally binding agreement between you ("User" or "you") and CannAppy ("we," "us," or "our"), the developer and operator of OneFast.

2. Description of Service

OneFast is an intermittent fasting tracker application that allows users to:

3. Not Medical Advice

The App is for informational and educational purposes only. Nothing in the App constitutes medical advice, diagnosis, or treatment. The body phase science information presented is based on general research and may not reflect your individual physiology.

You acknowledge and agree that:

4. Eligibility

You must be at least 13 years old to use the App. If you are under 18, you represent that you have obtained parental or guardian consent to use the App. By using the App, you represent and warrant that you meet these eligibility requirements.

5. User Accounts

Creating an account is optional. If you choose to create an account to enable cloud sync and backup:

6. Subscriptions and Payments

6.1 Free Tier

OneFast offers a free tier that includes core fasting tracking features, intermittent and extended fasting plans, body phase science, streaks and statistics, and electrolyte reminders. The free tier is available indefinitely at no cost.

6.2 Premium Subscription

OneFast Premium unlocks additional features including advanced analytics, weight tracking, data export, custom app icons, mood trends, and fast comparison. Premium is available at the following price points:

6.3 Free Trial

New subscribers may be eligible for a 7-day free trial of OneFast Premium. If you do not cancel before the trial period ends, your subscription will automatically convert to a paid subscription at the applicable rate.

6.4 Auto-Renewal

All subscriptions are auto-renewing. Your subscription will automatically renew at the end of each billing period (monthly or annually) unless you cancel before the renewal date.

6.5 Cancellation

You may cancel your subscription at any time through your Apple App Store or Google Play Store account settings. Cancellation takes effect at the end of the current billing period. You will retain access to Premium features until the end of the period you have already paid for. We do not provide refunds for partial billing periods.

6.6 Price Changes

We reserve the right to change subscription pricing. Any price changes will be communicated in advance and will take effect at the start of your next billing period after the change. Continued use of the Premium subscription after a price change constitutes acceptance of the new pricing.

7. Acceptable Use

You agree not to:

8. Intellectual Property

The App, including its design, code, content, graphics, body phase science text, and all associated intellectual property, is owned by CannAppy and is protected by applicable intellectual property laws. You are granted a limited, non-exclusive, non-transferable, revocable license to use the App for personal, non-commercial purposes in accordance with these Terms.

9. User Data and Privacy

Your use of the App is also governed by our Privacy Policy, which describes how we collect, use, and protect your data. By using the App, you consent to the practices described in the Privacy Policy.

10. Disclaimer of Warranties

The App is provided "as is" and "as available" without warranties of any kind, either express or implied.

To the fullest extent permitted by law, we disclaim all warranties, including but not limited to:

11. Limitation of Liability

To the maximum extent permitted by applicable law, CannAppy, its officers, directors, employees, agents, and affiliates shall not be liable for:

In no event shall our total aggregate liability exceed the amount you have paid to us in the twelve (12) months preceding the claim, or $50, whichever is greater.

12. Indemnification

You agree to indemnify and hold harmless CannAppy and its officers, directors, employees, and agents from any claims, damages, losses, liabilities, and expenses (including reasonable attorneys' fees) arising from your use of the App, your violation of these Terms, or your violation of any rights of a third party.

13. Modifications to the Service

We reserve the right to modify, suspend, or discontinue any part of the App at any time, with or without notice. We shall not be liable to you or any third party for any modification, suspension, or discontinuation of the App.

14. Changes to These Terms

We may update these Terms from time to time. When we make material changes, we will notify you through the App or by updating the "Effective Date" at the top of this page. Your continued use of the App after changes take effect constitutes acceptance of the updated Terms. If you do not agree to the revised Terms, you must stop using the App.

15. Termination

We may terminate or suspend your access to the App immediately, without prior notice, if you breach these Terms. Upon termination, your right to use the App will cease immediately. Sections that by their nature should survive termination (including Disclaimers, Limitation of Liability, and Indemnification) will survive.

16. Governing Law

These Terms shall be governed by and construed in accordance with the laws of the United States of America, without regard to conflict of law principles. Any disputes arising under or in connection with these Terms shall be resolved in the courts of the United States.

17. Severability

If any provision of these Terms is found to be unenforceable or invalid, that provision shall be limited or eliminated to the minimum extent necessary, and the remaining provisions shall remain in full force and effect.

18. Entire Agreement

These Terms, together with the Privacy Policy, constitute the entire agreement between you and CannAppy regarding the use of the App and supersede all prior agreements, representations, and understandings.

19. Contact Us

If you have any questions or concerns about these Terms of Service, please contact us: