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Supabase

Cloud & Infrastructure · Backend as a Service

Open-source Firebase alternative with a generous free tier including PostgreSQL, Auth, Storage, and Realtime.

No Credit CardForever FreeOpen Source
Duration

Forever (with limits)

Credit Card

Not Required

Rating

4.8/5 (412)

Geo Restrictions

None

Rate Limits

Bandwidth: 2GB/month
Other: 500MB database, 2 free projects

Free Tier Details

✅ Included

  • 500MB database
  • 1GB file storage
  • 2GB bandwidth
  • 50,000 monthly active users (auth)
  • 500K edge function invocations
  • Realtime subscriptions

❌ Not Included

  • —Daily backups
  • —Custom domains
  • —Priority support
  • —More than 2 projects

How to Get Your Free API Key

Create an account using GitHub or email.

https://supabase.com/dashboard

Click 'New Project', choose a name, password, and region.

Go to Settings → API to find your project URL and anon/service keys.

How to Test Your Key

Query your Supabase REST API.

curl 'https://YOUR_PROJECT.supabase.co/rest/v1/' \
  -H "apikey: YOUR_ANON_KEY" \
  -H "Authorization: Bearer YOUR_ANON_KEY"

Expected: Empty array or your table data.

Hidden Limitations

  • Projects pause after 1 week of inactivity on free tier
  • Limited to 2 free projects
  • No daily backups on free tier
  • Edge functions have cold starts

Official Links

DocumentationPricingDashboardWebsite

Last verified: 2026-02-10 · Last updated: 2026-02-10