Two Factor Authentication - Aegis Authenticator

Aegis is free and open source factor authenticator for Android supporting the HMAC-based one-time password (HOTP) and Time-based one-time password (TOTP) standard algorithms. Its vault protected by a password (scrypt) or biometrics (Android Keystore). New entries are added using QR code, saved images, entered manually or imported from other applications. Its data easily backed up or exported in several formats.