Terms of Service

Last updated: July 3, 2026

These Terms of Service ("Terms") govern your use of the PeakPilot mobile application (the "App") operated by an individual developer ("Developer", "we", "us", or "our"). By downloading, installing, or using the App, you agree to these Terms.

If you do not agree to these Terms, do not use the App. These Terms are provided in English only. Please also read our Privacy Policy, which explains how we handle information.

1. Description of Service

PeakPilot provides cognitive focus and mental training tools, including audio and visual exercises designed to support concentration techniques. The App operates primarily offline and does not require a user account.

The App may offer:

2. Health and Medical Disclaimer

PeakPilot is not a medical device and does not provide medical advice, diagnosis, or treatment.

The App offers general cognitive focus and mental training techniques only. It is not intended to diagnose, treat, cure, or prevent any disease or health condition, including sexual dysfunction or mental health disorders.

Always seek the advice of a qualified healthcare professional with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay seeking it because of something you have experienced while using the App.

Results are not guaranteed. Individual experiences may vary. We make no promises or guarantees about specific outcomes from using the App.

3. Eligibility

You must be at least 17 years of age to use the App. By using the App, you represent that you meet this age requirement and have the legal capacity to enter into these Terms.

If you are using the App on behalf of another person, you represent that you have the authority to bind that person to these Terms.

4. License Grant

Subject to your compliance with these Terms, we grant you a limited, non-exclusive, non-transferable, revocable license to download and use the App on Android devices that you own or control, solely for your personal, non-commercial use.

You may not:

5. Free Tier and Advertising

The App offers a free tier with access to basic features. Free-tier users may see advertisements (including banner and interstitial ads) in certain areas of the App. Advertisements are not displayed during active training sessions on the Play screen.

We reserve the right to modify the features available in the free tier at any time.

6. Pro Subscription and Purchases

6.1 Pro Features

Pro features may include, without limitation: advanced content types, custom timing intervals, premium voices, visual modes, and Sensory Overload mode. Available Pro features may change over time.

6.2 Payment

Pro subscriptions and lifetime purchases are processed through Google Play Billing. All payments are handled by Google. We do not collect or store your payment card information.

Prices are displayed in the App and on the Google Play Store at the time of purchase and may vary by region and currency.

6.3 Subscriptions

If you purchase a subscription:

6.4 Lifetime Purchase

A lifetime purchase grants access to Pro features for as long as the App remains available and supported. "Lifetime" refers to the lifetime of the App's availability, not the lifetime of the user.

6.5 Refunds

Refunds are handled according to Google Play's refund policies. We do not process refunds directly. To request a refund, contact Google Play support or use the refund option in your Google Play order history where available.

7. Acceptable Use

You agree to use the App only for lawful, personal purposes. You agree not to:

8. Intellectual Property

The App, including its design, code, content, trademarks, and documentation, is owned by the Developer and protected by intellectual property laws. These Terms do not grant you any ownership rights in the App.

Math questions and logic sequences are generated algorithmically. Riddle content is provided through licensed or original content assets within the App.

9. Third-Party Services

The App integrates with third-party services including Google Firebase, Google AdMob, and Google Play Billing. Your use of these services is subject to their respective terms and privacy policies. We are not responsible for third-party services.

10. Disclaimer of Warranties

THE APP IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.

We do not warrant that the App will be uninterrupted, error-free, secure, or free of harmful components, or that any defects will be corrected.

11. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, IN NO EVENT SHALL THE DEVELOPER BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, INCLUDING BUT NOT LIMITED TO LOSS OF PROFITS, DATA, OR GOODWILL, ARISING OUT OF OR RELATED TO YOUR USE OF THE APP.

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, OUR TOTAL LIABILITY FOR ANY CLAIMS ARISING OUT OF OR RELATED TO THESE TERMS OR THE APP SHALL NOT EXCEED THE GREATER OF (A) THE AMOUNT YOU PAID US IN THE TWELVE (12) MONTHS PRECEDING THE CLAIM, OR (B) FIFTY US DOLLARS (USD $50).

Some jurisdictions do not allow the exclusion or limitation of certain damages. In such jurisdictions, our liability is limited to the maximum extent permitted by law.

12. Indemnification

You agree to indemnify and hold harmless the Developer from any claims, damages, losses, or expenses (including reasonable legal fees) arising out of your use of the App, your violation of these Terms, or your violation of any rights of a third party.

13. Termination

We may suspend or terminate your access to the App at any time, with or without cause or notice. You may stop using the App at any time by uninstalling it.

Upon termination, your license to use the App ends immediately. Sections that by their nature should survive termination (including disclaimers, limitation of liability, and governing law) will survive.

14. Changes to These Terms

We may modify these Terms at any time. We will post the updated Terms on this page and revise the "Last updated" date. Material changes may be communicated through the App or the Google Play Store listing where appropriate.

Your continued use of the App after changes become effective constitutes acceptance of the updated Terms.

15. Governing Law

These Terms are governed by the laws of Vietnam, without regard to conflict of law principles. Any disputes arising from these Terms or the App shall be subject to the exclusive jurisdiction of the courts of Vietnam, unless mandatory consumer protection laws in your country require otherwise.

16. Severability

If any provision of these Terms is found to be unenforceable, the remaining provisions will remain in full force and effect.

17. Entire Agreement

These Terms, together with the Privacy Policy, constitute the entire agreement between you and the Developer regarding the App and supersede any prior agreements.

18. Contact Us

If you have questions about these Terms, contact us at:

Email: pnam38766@gmail.com

See also our Privacy Policy.