Auth0 Guardian vs Authio Lobby

Auth0 Guardian is a mobile app for completing multi-factor authentication on iOS and Android. During login, users can approve a push notification on an enrolled device or enter a temporary one-time password. Guardian-generated OTPs normally remain valid for 30 seconds. The app supports multiple languages and dialects, follows the device language by default, and offers system, light, and dark themes. Users can protect it with a passcode, passphrase, or device biometrics. Organizations can use Guardian SDKs to build similar applications or add Guardian capabilities to their own apps. Push delivery can use AWS SNS, Firebase Cloud Messaging, or Apple Push Notification service. Auth0 MFA API endpoints can enforce MFA at token endpoints and manage enrolled factors. Guardian is available through the Apple App Store and Google Play Store. The free plan is available; paid plans start at 35 /mo, with a 22-day trial.

Authio Lobby provides passwordless sign-in for apps through a hosted interface, SDKs, session features, and widgets for customer IT admins. Sign-in methods include passkeys, magic links, social login, and enterprise SSO using SAML 2.0, OIDC, and SCIM 2.0. The hosted interface can use a custom domain, organization-specific branding, and project-specific email templates. SDKs are listed for Next.js, React, Vue, and Node, with session helpers and edge-runtime JWT verification. Session tools include silent refresh, secure cookie helpers, route gating, and switching organizations within a session. Embeddable widgets let customer admins configure SSO, directory sync, and domain verification within a product. The free Developer tier is for projects under 10,000 MAUs and excludes SSO, SCIM, and Locate. Starter costs $129 a month and Pro costs $449 a month; Enterprise pricing is custom. Authio says GDPR and CCPA compliance is in place and describes its SOC 2 posture as pre-audit readiness, with Type I targeted for 2027-Q1.