Passwords kept on
this phone only.
Passwords go only into system secure storage (iOS Keychain / Android Keystore). No server, no cloud, no export. In return, if you lose your phone you enter them again.
The app opens only if your device has a lock set (fingerprint, face, PIN or pattern). On a device with no lock it will not run — that is by design.
The app shows no ads and does not track your usage.