1. Overview
iYang takes your privacy very seriously. This privacy policy explains how we handle your data.
🌿 Core Principle: All personal health data is stored only on your device and never uploaded to any server
2. Data Collection
- HealthKit Data: The app reads your steps, heart rate, sleep, HRV and other HealthKit data for display only, never uploaded to any server
- Completely local storage: All health records are stored only locally on your device
- No cloud upload: All data is processed locally on your device and never leaves your phone
- No photos/videos collected: The app does not use camera, microphone, or photo library, and does not collect any photo, video, or audio data
3. Data Usage
- HealthKit data for display only: Data read from HealthKit is only displayed within the app, no analysis or diagnosis is performed
- No third-party sharing: We do not share any data with third parties
- No AI analysis: The app does not provide AI analysis features; all data is for informational display only
- Wellness suggestions cite sources: All wellness suggestions cite authoritative sources (WHO international standards, NIH/NCCIH research, Chinese national standards, etc.), ensuring information traceability
4. Data Security
- Local storage protection: All data is stored in the app's sandbox directory
- System encryption: Leverages device encryption to protect your data
- Users can delete all data: You can view, export, or delete all personal data in the app at any time
5. User Rights
- View data: You can view all personal data in the app at any time
- Export data: You can export all personal data at any time
- Delete data: You can delete all personal data at any time
6. Contact Us
If you have any questions about this privacy policy, please contact us:
- Email: support@iyang.app
Last Updated: April 28, 2026