Métra — Privacy Policy

Last updated: 2026-04-29

What data Métra collects

Métra stores only the data you enter: cycle dates, flow intensity, pain symptoms, and notes. All data is saved locally on your device using an encrypted database (SQLCipher AES-256). No data is ever sent to any server operated by the app developer.

Optional cloud backup

If you connect Dropbox, Métra uploads an encrypted backup blob. The blob is encrypted on your device with a passphrase you choose. Dropbox cannot read your data. The developer cannot read your data. There is no password reset — you are the only holder of your key.

Third-party services

Métra does not use analytics, advertising SDKs, or crash reporting tools. The only third-party service is Dropbox (optional, user-initiated).

Local notifications

Métra can schedule a local notification when your predicted cycle window approaches. This uses the device notification system only — no data leaves your device.

Contact

Questions: paolo@paolosantucci.com
Source code: https://github.com/paolo-santucci/metra