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.
Core Features
- Email/password registration and login
- Social login with Google, Apple, Facebook, Twitter, GitHub
- 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 millions of 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 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 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
- No Phone Auth
- Limited options
Blaze (Pay-per-use)
- Unlimited MAU
- Phone Authentication
- Multi-Factor Auth
- Costs above 50,000 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, Anonymous Auth, and custom tokens for your own backends.
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. Beyond that, Phone Auth costs per SMS, SAML/OIDC providers per user, and MFA is additional.
Does Firebase Auth support Multi-Factor Authentication?
Yes, in the Blaze plan you can enable SMS-based MFA or TOTP as a second factor. This significantly increases account security.
