Duo Mobile vs SAP 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.

SAP Authenticator is a free mobile app that generates time-based passcodes for systems requiring one-time password authentication. Each code works for one login attempt, and the app creates a new one every 30 seconds. A passcode can act as a second factor or as an alternative password. The app supports multiple accounts, which can be configured by scanning a QR code or entering a secret key. Online account setup is also available only with SAP Authenticator. For accounts set up online, administrators add applications; users cannot maintain those applications themselves. Users can save applications in the app and access them later through mobile single sign-on without another authentication step. SAP documentation describes OTP authentication and mobile SSO use with SAP Single Sign-On and SAP Fiori Client. The app runs on iOS and Android and can be protected with a password. SAP recommends protecting the app with a logon password and using two-factor authentication when the scenario allows it.