Effective date: February 2026
Summary
Tarn collects no data. Zero. Nothing leaves your device.
Data collection
Tarn does not collect:
- Personal information
- Health data
- Usage analytics
- Crash reports
- Device identifiers
- Location data
- Any data whatsoever
Data storage
All data you enter is:
- Stored locally on your device only
- Encrypted with AES-256 using a key derived from your PIN
- Never transmitted anywhere
- Never backed up to any cloud service
Network activity
Tarn makes zero network requests. The app functions entirely offline. There are no servers, no APIs, no analytics, no telemetry.
Third parties
Tarn does not share data with third parties because Tarn does not have access to your data. Your data exists only on your device, encrypted with a key only you know.
Data deletion
You can delete all your data at any time from Settings. The app also includes automatic data deletion after failed PIN attempts for your protection.
Children's privacy
Tarn does not knowingly collect any information from anyone, including children under 13.
Changes
If this policy changes, this document will be updated. The app itself will always maintain zero data collection.
Contact
Questions? Open an issue at: github.com/tarn-app/tarn/issues
Tarn is open source. Verify these claims yourself: github.com/tarn-app/tarn