Firebase
Google's app backend: Firestore, auth, hosting, functions.
Google · checked Oct 22, 2026
What it is
Firebase provides auth, Firestore, storage, hosting, Cloud Functions and SQL Connect (Postgres) with a no-cost Spark plan and pay-as-you-go Blaze plan.
Use cases
- →Mobile apps
- →Google Cloud users
- →Apps needing auth + push + analytics
Pros
- +Mature, huge ecosystem
- +Generous no-cost tier
- +Great for mobile
Cons
- −NoSQL Firestore modeling
- −Pricing spread across many services
Where it ranks
- #4 Best Backend & Database for Vibe Coders
Mature, generous no-cost tier and great for mobile, but NoSQL modeling is harder for agents to get right.
- #4 Best Auth & Payments for Builders
Solid auth on a no-cost tier, strongest for mobile.
Compare Firebase
FAQ
How much does Firebase cost?
Spark plan: no-cost usage limits. Blaze: pay as you go (eligible new users can get $300 free credit). (As checked on 2026-10-22; confirm on https://firebase.google.com/pricing.)
What is Firebase best for?
#4 in Best Backend & Database for Vibe Coders: Mobile apps and Google Cloud users. #4 in Best Auth & Payments for Builders: Mobile apps.
What are the best alternatives to Firebase?
Supabase (Postgres backend: database, auth, storage, edge functions); Convex (Reactive TypeScript backend database).
Is Firebase open source?
No, Firebase is a commercial product.