---
lang: en
title: Google Firebase Authentication vs Supabase Managed Postgres
canonical: "https://saasspecs.com/firebase-vs-supabase-db/"
hvce_version: 1
tenant: saasspecs
slug: firebase-vs-supabase-db
record_kind: comparison
content_sha256: 2d930ac4f99063f326879e102ec41f6376784ae861c0c4eb6302a4181c322055
indexed_at: "2026-06-15T06:32:32.875Z"
license: citation-free
entities:
  -
    role: a
    slug: firebase
    name: Google Firebase Authentication
    type: Thing
    profile_url: "https://saasspecs.com/item/firebase/?format=md"
  -
    role: b
    slug: supabase-db
    name: Supabase Managed Postgres
    type: Thing
    profile_url: "https://saasspecs.com/item/supabase-db/?format=md"
---
# Google Firebase Authentication vs Supabase Managed Postgres

## Pair

- **A**: Google Firebase Authentication
- **B**: Supabase Managed Postgres

## Entity A

- **Title**: [Google Firebase Authentication](https://saasspecs.com/item/firebase/?format=md)
- **Schema type**: Corporation
- **Website**: https://firebase.google.com
- **Email**: support@google.com
- **Address**: 1600 Amphitheatre Parkway, Mountain View, California, 94043, United States
- **Coordinates**: 37.422, -122.0841
- **Deployment Link**: [Deploy Google Firebase Authentication Stack Layer](https://firebase.google.com/affiliate-placeholder)

### Summary

Google's ubiquitous, globally distributed cloud infrastructure identity layer optimized for massive app routing.

### Description

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.

### Attributes

- **Free Tier Allowance**: 50,000 MAU
- **Rate Limit Cap**: 6,000 RPM
- **Session Lifetime**: 1 Hours
- **Overage Fee per 1k MAU**: $0
- **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

## Entity B

- **Title**: [Supabase Managed Postgres](https://saasspecs.com/item/supabase-db/?format=md)
- **Schema type**: Corporation
- **Website**: https://supabase.com
- **Email**: support@supabase.io
- **Address**: 85 Harrison St, San Francisco, California, 94105, United States
- **Coordinates**: 37.7833, -122.3999
- **Deployment Link**: [Deploy Supabase Managed Postgres Stack Layer](https://supabase.com/dashboard/new/database)

### Summary

Fully managed PostgreSQL with realtime replication, row-level security, and edge-friendly connection pooling.

### Description

Supabase Database layers a production-grade Postgres cluster behind automatic backups, point-in-time recovery, and PostgREST APIs. Developers ship relational schemas with native SQL migrations and optional realtime broadcast channels.

### Expert insight

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

### Attributes

- **Free Tier Allowance**: 500 MB
- **Rate Limit Cap**: 60 Connections
- **Session Lifetime**: 24 Hours
- **Overage Fee per 1k MAU**: 0.13 USD/GB
- **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

## Facts (machine-readable)

| axis | unit | a_value | b_value | a_display | b_display |
| --- | --- | --- | --- | --- | --- |
| Free Tier Allowance | MAU | 50000 | 500 | 50,000 MAU | 500 MB |
| Rate Limit Cap | RPM | 6000 | 60 | 6,000 RPM | 60 Connections |
| Session Lifetime | Hours | 1 | 24 | 1 Hours | 24 Hours |
| Overage Fee per 1k MAU | USD | 0.005 | 0.125 | 0.01 USD | 0.13 USD/GB |

## Metrics

- **Free Tier Allowance**: 50,000 MAU / 500 MB
- **Rate Limit Cap**: 6,000 RPM / 60 Connections
- **Session Lifetime**: 1 Hours / 24 Hours
- **Overage Fee per 1k MAU**: 0.01 USD / 0.13 USD/GB

## Comparison context

This comparison covers the following catalog entities:

- [Google Firebase Authentication](https://saasspecs.com/item/firebase/?format=md) (a)
- [Supabase Managed Postgres](https://saasspecs.com/item/supabase-db/?format=md) (b)