Supabase vs Firebase
Side-by-side comparison of Supabase and Firebase. Pricing, features, best use cases, and honest verdict from a developer who has tested both.
Key Takeaways
- +Supabase is better for: infrastructure, database, postgres
- +Firebase is better for: infrastructure, baas, google
- ~Both are infrastructure tools. Your choice depends on workflow preference and team setup.
Supabase
Open-source Firebase alternative built on Postgres. Auth, real-time subscriptions, storage, edge functions, and pgvector for AI embeddings. Generous free tier.
Firebase
Google's BaaS platform. Firestore (NoSQL), Realtime Database, Auth, Cloud Functions, Hosting, and ML. Free Spark tier; pay-as-you-go Blaze.
Feature Comparison
| Feature | Supabase | Firebase |
|---|---|---|
| Category | Infrastructure | Infrastructure |
| Type | Platform | Platform |
| Pricing | Free tier available | Free |
| Best For | Reactive backend with real-time sync | Drop-in authentication for React/Next.js |
| Language / Platform | Multi-language | Multi-language |
| Open Source | Yes | No |
In Depth
Supabase
Supabase gives you a full backend built on top of Postgres. You get a database with a REST and GraphQL API auto-generated from your schema, built-in auth with social providers, real-time subscriptions via websockets, file storage, and edge functions for serverless compute. The pgvector extension makes it a natural choice for AI applications that need vector similarity search alongside traditional relational data. The local development experience uses Docker to run the entire stack on your machine, and the CLI handles migrations and type generation. Supabase pairs exceptionally well with AI app builders like Lovable and Bolt, which use it as their default backend. The free tier includes 500MB database storage, 1GB file storage, and 50K monthly active users.
Firebase
Firebase is Google's backend-as-a-service for mobile and web. Firestore is the document database most teams pick today; Realtime Database is the older real-time JSON store. Authentication ships with social providers out of the box, Cloud Functions runs serverless code on Google Cloud, and Hosting handles static sites with CDN. Firebase shines for mobile apps, real-time multiplayer, and quick MVPs. The pricing model is consumption-based and can surprise teams at scale, which is part of why Postgres-based alternatives like Supabase have grown.
The Verdict
Both Supabase and Firebase are strong tools in the infrastructure space. The right choice depends on your workflow. Read the full review of each tool for a deeper dive, or watch the video walkthroughs to see them in action.
