Duo Mobile vs Oracle Mobile Authenticator

Duo Mobile provides two-factor and multi-factor authentication for company and personal data on iOS and Android phones and tablets. Users can approve or deny sign-ins with Duo Push, or enter time-based passcodes generated by the app. It also supports third-party TOTP accounts, biometrics, and passcodes. Duo Restore backs up and restores Duo-protected accounts when a user changes devices, and Security Checkup provides a mobile-device security score through app notifications. For organizations, Duo connects with legacy infrastructure, custom apps, VPNs, SaaS tools, and offline devices. Integration methods include RADIUS, SAML/OIDC, Duo Authentication Proxy, and direct API connections. Adaptive policies can consider user role, location, application, network, and device health. Duo says it keeps private keys on users’ devices in a tamper-proof secure element and does not store passwords. The free plan covers 10 users; paid plans start at $3.00 per month, and a 30-day trial is listed. End users needing enrollment or troubleshooting help are directed to their organization’s Duo administrator.

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.