Firebase Authentication
App-developer auth (Google/Firebase)
Quick, free-to-start authentication for mobile and web apps in the Firebase ecosystem.
At a glance
- Category
- App-developer auth (Google/Firebase)
- Ownership
- Founded
- 2016 (Firebase acquired by Google 2014)
- Deployment
- Cloud
- Pricing
- Free tier; Identity Platform billed per MAU
- Experience
- Developer-first
- Segments
- Ecommerce · Gaming
Overview
Firebase Authentication provides drop-in sign-in for web and mobile apps with social providers, email/password, phone, and anonymous auth, tightly integrated with Firebase and Google Cloud. Identity Platform extends it with enterprise features like SAML/OIDC and MFA.
Best for
Mobile and web app teams in the Firebase/Google ecosystem that want fast, low-cost authentication to get started.
Consider alternatives if
You need enterprise B2B features or SCIM, or a CIAM platform independent of Google Cloud (though Identity Platform covers some of this).
Capabilities
- SSO (SAML / OIDC) —
- SCIM provisioning —
- Multi-factor auth ✓
- Passwordless / passkeys ✓
- Social login ✓
- Self-hosted option —
Capability flags are directional, for shortlisting — verify against current vendor documentation before a decision.
Strengths
- Very fast to integrate for mobile and web apps
- Generous free tier
- Tight Firebase/Google Cloud integration
- Identity Platform adds enterprise auth (SAML/OIDC, MFA)
Considerations
- Best fit is inside the Firebase/Google ecosystem
- Core Firebase Auth is light on B2B/SCIM (needs Identity Platform)
- Less control over advanced enterprise flows
Related reading
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