F
Authentication & Identity
Firebase Auth
80.1
/ 100
Google-backed authentication with best-in-class mobile SDKs. Email, social, phone, and anonymous auth.
Updated March 2026
Score Breakdown
Value
82
Capability
80
Experience
80
Reliability
88
Support
72
Ecosystem
85
Momentum
62
Pricing
Spark
$0/mo
- ✓ 10K verifications/mo
- ✓ All auth methods
- ✓ Anonymous auth
Blaze
Pay as you go
- ✓ $0.01-0.06 per verification
- ✓ Phone auth
- ✓ Multi-tenancy
Key Features
✓ Email/password
✓ Social login
✓ Phone auth
✓ Anonymous auth
✓ Custom claims
✓ Multi-tenancy
✓ Mobile SDKs
✓ Admin SDK
About Firebase Auth
Founded
2011
HQ
Mountain View, CA
Funding
Google-owned
Team Size
500+
Open Source
No
Disclosure: ScoreMyStack may earn a commission through affiliate links. This does not affect our scores. Learn more