Oracle Mobile Authenticator vs Proton Authenticator

Oracle Mobile Authenticator provides a second verification method for signing in to applications protected by multi-factor authentication. After enrollment, it generates passcodes and can receive push notifications. Oracle says one-time passcodes can be generated while offline, but registering for push notifications and running device compliance checks require an online connection. The app uses a secret key to generate OTPs and receive push notifications, and Oracle lists app protection policy, compliance policy, and silent key refresh among its security features. For Oracle IAM passcodes, other authenticator apps that follow TOTP can also be used; Oracle Mobile Authenticator is required for push notifications. Passcode sign-in requires a synchronized device clock, with a maximum permitted difference of 90 seconds. On Surface Pro or Windows Desktop, enrollment needs a manually entered key or enrollment URL because of a QR scanner camera limitation; manual keys must use BASE32. For Oracle Cloud Infrastructure MFA, users can register one device. If it becomes unavailable, an administrator must disable MFA before re-enrollment. The app is listed as free for Android, iOS, and Windows.

Proton Authenticator generates time-based one-time codes for two-factor authentication, adding a code at login to help secure accounts. It can display codes without an internet connection, and a Proton Account is not required to use it. Signing in is optional and enables code syncing across devices. Users can import codes from Google Authenticator, 2FAS, Aegis Authenticator, Bitwarden Authenticator, Ente Auth, and LastPass Authenticator, then export their codes from the app. Backups can be stored locally or in the cloud, with end-to-end encrypted sync between devices. Proton says its servers cannot access synced data in unencrypted form; when sync is on, entries are protected with 256-bit AES-GCM. The app is open source, and its vault can be unlocked with face or fingerprint recognition. It is available for Android, iOS, Linux, macOS, and Windows; Android is also available through F-Droid. Proton Authenticator is free on all listed platforms, with no ads or tracking.