Supabase vs Firebase (2026)
Head-to-head comparison for vibe coders: scores, free tiers, pricing and best-for, using the same evidence-based methodology. Rankings are never for sale.
Side-by-side comparison
| Criterion | Supabase | Firebase |
|---|---|---|
| Score | 93/100 | 77/100 |
| Free tier | Yes: 2 projects, 500 MB DB, 50K MAU, 1 GB storage (pauses after 1 week idle) | Yes: Spark plan with no-cost quotas (e.g. Firestore 1 GiB, 50K reads/day) |
| Open source | Yes | No |
| Pricing | Pro from $25/mo per org (includes $10 compute credit) | Blaze: pay as you go above free quotas |
| Best for | Default backend for vibe-coded apps (Lovable, Bolt, v0 integrations) | Mobile and realtime apps that want a Google-managed backend |
| Category | Databases & backends | Databases & backends |
Score breakdown
| Criterion | Supabase | Firebase |
|---|---|---|
| Fit for the use case /25 | 24 | 20 |
| Vibe-coder friendliness /15 | 14 | 13 |
| Output quality & reliability /15 | 13 | 13 |
| Pricing & free tier /15 | 13 | 12 |
| Ecosystem & integrations /10 | 10 | 9 |
| Momentum /10 | 10 | 7 |
| Code ownership & lock-in /10 | 9 | 3 |
Based on desk research of official pricing pages and docs; see methodology.
How they differ
Supabase is a Postgres database with auth, storage, edge functions and realtime on top: you write SQL and your data is relational. Firebase is Google’s app platform built around Firestore, a NoSQL document database, plus Authentication, Hosting, Cloud Functions and more.
Free plans compared
Supabase Free: 50,000 monthly active users, a 500 MB database, 1 GB file storage, 5 GB egress and 2 active projects. Free projects are paused after 1 week of inactivity. Firebase’s Spark plan has no-cost usage limits and needs no payment method (Firestore includes 1 GiB stored and 50K reads/day, per our listing).
Paid plans compared
Supabase Pro starts at $25/mo per organization with 100,000 MAU, an 8 GB disk per project, 250 GB egress and $10/mo of compute credit. Firebase Blaze is pay as you go above the free quotas, and eligible new Google Cloud accounts can get $300 in credit.
For vibe coders
Many AI app builders and coding agents work well with Supabase: Bolt’s docs list a Supabase integration, and Supabase publishes an MCP server and agent skills. Firebase fits best if you also want Google’s mobile tools (Crashlytics, Cloud Messaging, Remote Config).
Lock-in
Supabase is open source and standard Postgres, so you can move the data to any Postgres host. Firestore data is in Google’s proprietary format and has to be exported and remodeled to leave.
Who wins: Supabase or Firebase?
By score, Supabase wins Supabase vs Firebase at 93/100 vs 77/100. Supabase: The best fit for AI builders: Postgres, auth and storage in one, a generous free tier, open source and deep builder integrations. Firebase: Mature, generous free tier, strong for mobile. Proprietary NoSQL creates lock-in. Supabase is best for Default backend for vibe-coded apps (Lovable, Bolt, v0 integrations). Firebase is best for Mobile and realtime apps that want a Google-managed backend.
FAQ
- Which is better, Supabase or Firebase?
- By our score, Supabase (93/100) ranks above Firebase (77/100). Supabase is best for Default backend for vibe-coded apps (Lovable, Bolt, v0 integrations). The right pick still depends on your workflow; see the side-by-side table.
- What is the Supabase vs Firebase score?
- Supabase scores 93/100 and Firebase scores 77/100 on PromptToProd's evidence-based ranking. Scores are never for sale.
- Is Supabase free?
- Yes. Supabase Free includes 2 active projects, a 500 MB database and 50,000 MAU, but free projects pause after 1 week of inactivity.
- Is Firebase free?
- Firebase’s Spark plan is no-cost within usage limits and needs no payment method. Higher usage requires the pay-as-you-go Blaze plan.
- Should I use SQL or NoSQL for an AI-built app?
- If your data is relational (users, orders, teams), Supabase’s Postgres is usually easier to query and to change later. Firestore suits document-shaped data and Google’s mobile ecosystem.