Google Firebase Authentication vs Supabase Managed Postgres Database

Google Firebase Authentication vs Supabase Managed Postgres Specs
  • Free Tier Allowance
  • Rate Limit Cap
  • Session Lifetime
  • Overage Fee per 1k MAU
Comparison chart between Google Firebase Authentication and Supabase Managed Postgres raw data
MetricGoogle Firebase AuthenticationSupabase Managed Postgres
Free Tier Allowance50,000 MAU500 MB
Rate Limit Cap6,000 RPM60 Connections
Session Lifetime1 Hours24 Hours
Overage Fee per 1k MAU$00.13 USD/GB
Deploy Firebase Backend
👉 50,000 Free MAU • Realtime NoSQL Included
Deploy Supabase Postgres
👉 500 MB Managed Postgres • Full pgvector Support
Google Firebase Authentication
MFA Support:
SMS Phone Verification exclusively on upgraded infrastructure tiers
Enterprise SSO SAML:
Supported through Google Cloud Identity Platform integration layer
Custom Domain Support:
Included naturally through standard Firebase Hosting custom routes
Supported SDKs:
Android, iOS, C++, Unity, Web JS, Node.js, Python, Go, Java
Social Providers:
Google, Facebook, GitHub, Twitter, Yahoo, Microsoft, Apple
Compliance Standards:
SOC1/2/3, ISO 27001, ISO 27017, HIPAA Compliant, GDPR Compliant
Webhook Fallback Policy:
Custom event handling configured via Cloud Functions background retry logic
Supabase Managed Postgres
MFA Support:
Enforced via Supabase dashboard and organization SSO policies
Enterprise SSO SAML:
Available on Team and Enterprise plans with SAML directory federation
Custom Domain Support:
Custom domains for API and Studio via project settings and DNS records
Supported SDKs:
JavaScript, TypeScript, Python, Dart, Swift, Kotlin, Go, C#
Social Providers:
GitHub OAuth for project provisioning; auth providers via Supabase Auth
Compliance Standards:
SOC 2 Type II, GDPR, HIPAA available on Enterprise agreements
Webhook Fallback Policy:
Database webhooks with retry via Edge Functions or external queue consumers
Google Firebase Authentication

Firebase Authentication provides a core backend service toolkit designed to authenticate users via client-side libraries. Backed completely by Google Cloud Infrastructure, it handles extreme scale seamlessly for mobile and web systems alike.

Supabase Managed Postgres
Enable connection pooling via Supavisor on port 6543 to stay within direct connection limits during serverless traffic spikes.