Privacy and backups

On your phone

Places, route traces, observations, voice notes, preferences, and private journey history are stored in app-private local storage. Android automatic backup and device transfer are excluded. No account, advertising SDK, or automatic location upload is included.

Actions you choose

Weather requests send your current coordinates to Open-Meteo after you enable weather and press Fetch. Voice commands use your installed Android speech recognition provider, which may process audio online. Check-in sharing uses Android's chooser; you review and send using the selected app. Opening a contact uses the dialer without placing a call automatically.

Sign reading uses ML Kit's bundled Latin-script model to process images on device. Temporary camera captures are deleted after recognition. Google's SDK may collect operational diagnostics under its own terms. No sign image is uploaded to Yenerys. NFC scans run only on request and associate tag identifiers locally with saved landmarks.

Backup and recovery

Encrypted backup uses AES-256-GCM with a fresh random salt and nonce. A key is derived from your passphrase using PBKDF2-HMAC-SHA256 with 210,000 iterations. Keep the passphrase separately in a password manager. The server cannot reset or recover it. Save through Android's file picker to storage you control.

Unencrypted exports contain private location information and voice notes and can be read by anyone with the file. Imports are validated and added as new draft routes; existing records are preserved. You may also choose to restore preferences, calibration and private history.

Delete data

Use Settings, Backups and privacy to delete the local library. Journey history has configurable retention. Uninstalling removes app-private records; exported files remain with the storage provider you chose.

This download server

The server distributes the application and release documentation. Standard web access logs include request time, IP address, and requested path. It does not receive your app's route library or backup passphrase.