Privacy Policy

1. Data Collection

We collect essential training data:

• Breath-hold duration records
• Diaphragm contraction counts
• Device model and OS version

2. Data Usage

Data is used for:

• Generating training statistics
• Improving algorithm accuracy
• No third-party sharing

3. Data Storage

All data is stored locally. Permanent deletion available via Settings → Clear Data

4. Contact

For privacy concerns: zhaoxingyu19931209@gmail.com