Auth0 Guardian vs Kinde

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.

Kinde is a cloud platform combining authentication, access management, subscription billing, and feature management for SaaS products. Sign-in options include passwords, passwordless access, enterprise SSO, machine-to-machine access, social and developer logins, and multi-factor authentication. Organizations and multi-tenancy support B2B models. Feature flags provide 10 on Free and unlimited flags on Pro and higher plans. The Free plan includes 10,500 monthly active users, two custom roles, 10 permissions, five custom properties, one webhook, and two environments. Paid plans start at $25 a month. Listed billing transaction fees are 0.7% on Free and Pro, 0.6% on Plus, and 0.5% on Scale; prices are indicative and vary with actual usage. Kinde provides APIs and SDKs for iOS and Android. It lists ISO 27001 registration, SOC 2 Type 2 attestation, HIPAA compliance, and GDPR compliance. Stated protections include AES256 encryption at rest and TLS 1.2 or later in transit, alongside OAuth 2.0, CSRF protections, DMARC, DNSSEC, and a strict content security policy.