Terms of Service
Last updated: June 2025
Welcome to Stress (the “App”). Please read these Terms of Service carefully before using the App. By downloading, installing, or using the App, you acknowledge that you have read, understood, and agree to all terms. If you do not agree, please stop using the App immediately.
1. Service Description
1.1 The App is a personal health monitoring tool based on Apple HealthKit data. It analyzes physiological indicators such as heart rate variability (HRV) and resting heart rate to calculate and display your physiological stress level. 1.2 Features include, but are not limited to: • Realtime stress monitoring and historical trend analysis • Automatic generation and dynamic updates of a personal physiological baseline • Guided breathing exercises • Apple Watch companion app support 1.3 The App relies on Apple HealthKit for health data, so you must grant the relevant HealthKit permissions to use core features.
2. Health Data Disclaimer
2.1 Not for medical use: Stress levels, trends, and other health-related outputs are for personal reference and wellness management only and do not constitute medical diagnosis, medical advice, or treatment. 2.2 Not a substitute for professional care: Outputs cannot replace a doctor’s diagnosis or advice. Seek medical care if you feel unwell or have health concerns. 2.3 Data accuracy: Analysis depends on Apple HealthKit data and may be affected by sensor precision, wear method, individual differences, and more. We do not guarantee absolute accuracy. 2.4 Emergencies: The App does not provide emergency medical services. In an emergency, call emergency services or go to the nearest medical facility. 2.5 Informed consent: You understand that health information from the App should not be your sole basis for medical decisions.
3. User Responsibilities
3.1 Before using the App, correctly grant HealthKit permissions on your Apple device and wear Apple Watch properly for accurate data. 3.2 Keep a supported iOS / watchOS version installed for normal operation. 3.3 You must not: • Decompile, reverse engineer, or otherwise attempt to obtain the App’s source code • Use the App for any illegal activity • Interfere with or disrupt normal operation of the App 3.4 You are solely responsible for any health-related decisions made while using the App.
4. Intellectual Property
4.1 All App content—including software code, algorithms, UI design, icons, and text—is protected by intellectual property laws. 4.2 We grant you a non-exclusive, non-transferable, revocable personal license to install and use the App only on your Apple devices. 4.3 Without our prior written consent, you may not copy, modify, distribute, sell, or otherwise exploit any part of the App.
5. Changes and Termination
5.1 We may modify, suspend, or terminate all or part of the App’s features at any time without prior notice. 5.2 If the App ceases operation, we will provide advance in-app notice and a reasonable period for data export where appropriate. 5.3 If you violate these Terms, we may immediately stop providing the service without liability.
6. Disclaimer of Warranties and Liability
6.1 The App is provided “as is” and “as available.” To the maximum extent permitted by law, we do not warrant that: • The App will meet your specific needs • The App will run uninterrupted, timely, securely, or error-free • Results obtained from the App will be accurate or reliable • Any errors in the App will be corrected 6.2 To the maximum extent permitted by law, we are not liable for any direct, indirect, incidental, special, punitive, or consequential damages arising from use of or inability to use the App. 6.3 The App may contain links to third-party sites or services. We are not responsible for their accuracy, completeness, or reliability.
7. Amendments
7.1 We may amend these Terms at any time. Updated Terms will be published in the App with an update date. 7.2 For changes affecting your material rights, we will provide a clear in-app notice. 7.3 Continued use after an update means you accept the amended Terms. If you disagree, stop using the App.
8. Governing Law and Disputes
8.1 The formation, performance, interpretation, and dispute resolution of these Terms are governed by the laws of the People’s Republic of China. 8.2 Disputes should first be resolved through friendly negotiation. If negotiation fails, either party may bring a lawsuit before a court with jurisdiction where the App operator is located.
Contact & Feedback
If you have questions or suggestions about these Terms, please contact us via Settings → Feedback in the App.