Supabase
Best for: All-in-one backend (database + auth + storage + real-time). The most complete free BaaS.
Free Tier Limits (2026)
| Limit | Value |
|---|---|
| Database storage | 500 MB (Postgres) |
| File storage | 1 GB |
| Auth users | 50,000 MAU |
| API requests | Unlimited |
| Egress | 2 GB/month |
| Projects | 2 free projects |
| Always free? | ✅ Yes (pauses after 1 week idle) |
Key Strengths
- Open source — self-hostable, no lock-in
- Full Postgres (not a fork or subset)
- Built-in auth (email, OAuth, magic link, SMS)
- Real-time subscriptions (WebSocket)
- Edge Functions (Deno-based)
- Auto-generated REST + GraphQL APIs from your schema
- Dashboard UI for managing everything
Weaknesses
- Pauses after 1 week of inactivity (cold start ~2-5s resume)
- 500 MB storage fills up faster than you think with production data
- File storage limited to 1 GB
- 50K MAU limit reached quickly if app gets traction
Best For
- Full-stack apps (frontend + Supabase backend)
- MVPs and side projects
- Apps needing user auth out of the box
- Real-time features (chat, live updates, collab)
Upgrade Path
Pro plan: $25/month flat — 8 GB DB, 100 GB file storage, 100K MAU. No surprise bills.
Sources
- supabase.com/pricing
- uibakery.io/supabase-pricing
- agentdeals.dev database free tier comparison