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Supabase vs Firebase

Complete comparison of Supabase vs Firebase for backend development. Analyze Postgres vs NoSQL, pricing, authentication, realtime features, and choose the right backend in 2025.

Database

Last updated: December 6, 2025

Tool Overview

Supabase

Open-source Firebase alternative powered by PostgreSQL

Pros

  • •Open-source and self-hostable
  • •PostgreSQL (SQL) database
  • •True relational database
  • •More generous free tier
  • •Standard SQL queries
  • •Better for complex data models

Cons

  • •Younger platform (less mature)
  • •Smaller ecosystem
  • •Fewer managed services
  • •Learning curve for SQL
  • •Less extensive documentation

Best For

  • •Relational data models
  • •Open-source advocates
  • •PostgreSQL familiarity
  • •Self-hosting needs
Learn more about Supabase

Firebase

Google's comprehensive app development platform

Pros

  • •Mature ecosystem
  • •Extensive documentation
  • •Rich feature set
  • •Google Cloud integration
  • •Larger community
  • •Better mobile SDK support

Cons

  • •Proprietary platform
  • •NoSQL limitations
  • •Can be expensive at scale
  • •Vendor lock-in concerns
  • •Complex pricing structure

Best For

  • •Google Cloud ecosystem
  • •Mobile-first applications
  • •NoSQL data models
  • •Rapid prototyping
Learn more about Firebase

Feature Comparison

Feature
Supabase
Firebase
Database Type
PostgreSQL (SQL)
Firestore (NoSQL)
Self-Hosting
Free Tier
500MB + 50K MAU
1GB + limited reads/writes
Maturity
Newer
Mature
Realtime
Authentication
Built-in
Built-in
File Storage
1GB free
5GB free
Complex Queries
Excellent (SQL)
Limited (NoSQL)
Vendor Lock-in
Low
High

Pricing Comparison

Supabase Pricing

Free

$0/month
  • 500MB database
  • 1GB file storage
  • 50,000 monthly active users
  • 2GB bandwidth

Pro

$25/month
  • 8GB database
  • 100GB file storage
  • 100,000 monthly active users
  • 50GB bandwidth
  • Daily backups

Firebase Pricing

Spark (Free)

$0/month
  • 1GB Firestore storage
  • 10GB hosting transfer
  • 50K reads/day
  • 20K writes/day

Blaze (Pay as you go)

Variable
  • Pay per usage
  • Unlimited apps
  • Cloud functions
  • Extended support

Expert Verdict

Supabase and Firebase serve different architectural preferences. Supabase is ideal for relational data, SQL familiarity, and open-source advocates. Firebase excels for Google Cloud integration, mobile apps, and teams wanting a mature, fully-managed platform.

Choose Supabase

Choose Supabase if you need relational database features, prefer open-source solutions, want self-hosting options, or have complex data relationships requiring SQL.

Choose Firebase

Choose Firebase if you are building mobile-first applications, need deep Google Cloud integration, want a proven mature platform, or prefer NoSQL flexibility.

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