Privacy Policy
Last updated: February 12, 2026
This Privacy Policy describes how ZSWatch Companion App ("we", "us", or "our") collects, uses, and shares information when you use our mobile application.
Information We Collect
Information You Provide
- Device pairing information: When you pair your ZSWatch with the app, we store the device identifier locally on your phone to enable automatic reconnection.
Information Collected Automatically
- Bluetooth data: The app communicates with your ZSWatch over Bluetooth Low Energy (BLE) to sync notifications, health data, and settings.
- Location data: If you grant permission, the app may access your location to relay GPS coordinates to your watch for weather and fitness features. Location data is sent directly to your watch and is not stored or transmitted elsewhere.
- Health and fitness data: Step counts, heart rate, and activity data synced from your watch are stored locally on your device.
How We Use Information
We use the information solely to:
- Enable communication between your phone and ZSWatch
- Sync health data, weather, and other features to your watch
- Provide firmware update functionality
Data Storage and Security
- Local storage only: All data is stored locally on your device. We do not have servers that collect or store your personal information.
- No cloud sync: Your health data, notifications, and settings are not uploaded to any cloud service.
- No analytics: We do not use third-party analytics services that track your usage.
Data Sharing
We do not sell, trade, or otherwise transfer your information to third parties. The app may connect to:
- GitHub: To download firmware updates (no personal data is sent)
Permissions Explained
| Permission | Purpose |
|---|---|
| Bluetooth | Required to communicate with your ZSWatch |
| Location | Optional - provides GPS data to watch for weather/fitness |
| Internet | Required for firmware downloads from GitHub |
Children's Privacy
The app is not directed at children under 13. We do not knowingly collect information from children.
Changes to This Policy
We may update this Privacy Policy from time to time. Changes will be posted on this page with an updated revision date.
Open Source
ZSWatch Companion App is open source. You can review the source code at:
Contact
If you have questions about this Privacy Policy, please open an issue on our GitHub repository or contact us at mail@zswatch.dev.
This app is part of the ZSWatch open-source smartwatch project.