Choosing a backend as a service (BaaS) is tough. Firebase has been around forever, but Supabase has been stealing the spotlight. Both offer generous free tiers — but which one actually works better for developers in 2025?
Let’s break it down 👇
🔥 Free Tier Overview
Firebase Free Tier
- ✅ 50,000 document reads/day (Firestore)
- ✅ 50,000 writes/day
- ✅ 1 GB storage
- ✅ 10 GB hosting bandwidth
- ✅ Free Authentication (basic email/Google sign-in)
Limits: Realtime DB pricing can get expensive. Vendor lock-in is a real concern.
Supabase Free Tier
- ✅ 500 MB database storage (Postgres)
- ✅ 50 MB file storage
- ✅ 2 GB bandwidth
- ✅ 50,000 monthly active users for Auth
- ✅ Edge Functions (100,000 monthly invocations)
Limits: Lower storage than Firebase free tier. Still catching up on ecosystem maturity.
⚔️ Where Supabase Wins
- Postgres instead of Firestore → SQL support, powerful queries.
- Auth is extremely generous (50k MAU for free).
- Edge functions are built in.
⚔️ Where Firebase Wins
- Bigger ecosystem: Docs, community, tutorials.
- Hosting & bandwidth are better for free projects.
- Battle-tested reliability (Google infra).
📌 Verdict
- Choose Supabase if you want SQL + generous free Auth + open-source vibes.
- Choose Firebase if you want Google ecosystem + scale + hosting edge.
👉 Both are great. But if you’re prototyping fast and want to avoid Google lock-in, Supabase feels more 2025-friendly.
💬 What’s your experience with Firebase vs Supabase free tier? Drop your thoughts below 👇
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