What is Firebase Authentication?
Firebase Authentication is a fully managed authentication service that simplifies user login for apps. Instead of developing custom login systems, developers use Firebase Auth for secure login with just a few lines of code. The service supports all common authentication methods and can be extended for enterprise requirements like SAML or generic OpenID Connect via Identity Platform.
Core Features
- Email/password registration and login
- Social login with Google, Apple, Facebook, Twitter, GitHub, Microsoft, and Yahoo
- Phone authentication with SMS verification
- Anonymous Auth for guest users
- Multi-Factor Authentication (MFA)
- Session management and token refresh
Typical Use Cases
Consumer Apps: Apps with many users use Firebase Auth for quick login via Google or Apple accounts. Users expect frictionless login without password creation.
B2B Applications: Enterprises can integrate SAML or OpenID Connect providers via an Identity Platform upgrade to enable single sign-on with existing identity providers.
Progressive Web Apps: Web applications use Firebase Auth for persistent sessions across browser sessions. Users stay logged in.
Benefits
- No need for custom auth infrastructure
- Support for all common identity providers
- Automatic token management in SDKs
- Scales automatically with user numbers
Integration with innFactory
As a certified Google Cloud partner, innFactory supports you with Firebase Authentication: configuration of auth providers, integration with existing identity systems, and implementation of MFA.
Available Tiers & Options
Spark (Free)
- 50,000 MAU free
- Email and social login
- Up to 50 MAU for SAML/OIDC free
- No separate free quota for Phone Auth
- Limited options for enterprise sign-in
Blaze (Pay-per-use)
- Unlimited MAU
- Phone Authentication
- Multi-Factor Authentication
- SAML/OIDC via Identity Platform upgrade
- Costs above 50,000 MAU or 50 SAML/OIDC MAU
Typical Use Cases
Technical Specifications
Frequently Asked Questions
Which login methods does Firebase Authentication support?
Firebase Auth supports email/password, Google, Apple, Facebook, Twitter, GitHub, Microsoft, Yahoo, Phone, and Anonymous Auth, plus custom tokens for your own backends. SAML and generic OpenID Connect providers are available via an upgrade to Identity Platform.
Is Firebase Authentication secure?
Yes, Firebase Auth uses industry-standard security practices. Passwords are stored hashed, tokens are signed, and session management is built-in.
Can I use Firebase Auth with my own backend?
Yes, Firebase Auth generates ID tokens that can be verified by your backend. You can also create custom tokens for your own authentication systems.
How is Firebase Authentication billed?
The first 50,000 monthly active users are free on the Spark plan, as are up to 50 MAU for SAML/OIDC. Beyond that, the Blaze plan applies usage-based billing according to Google Cloud pricing, including per-SMS charges for Phone Auth.
Does Firebase Auth support Multi-Factor Authentication?
Yes, on the Blaze plan you can enable SMS-based Multi-Factor Authentication as a second factor. This significantly increases account security.
Note: All product information on this page has been compiled with care, but is provided without guarantee and may be outdated or incomplete. Cloud services evolve rapidly — features, pricing, SLAs, and availability change frequently. Authoritative and up-to-date information can only be found on the official product page of Google Cloud (official documentation). This page does not represent an offer by Google Cloud.
