Firebase

Google's app backend: Firestore, auth and push for mobile-first apps

firebase.google.com · Spark free tier; pay-as-you-go Blaze

Firebase: Firestore realtime document DB, Authentication, Cloud Messaging push and Hosting — still the fastest backend for mobile apps.

Capabilities

Capabilities

  • Firestore realtime sync (offline-first mobile), FCM push notifications (free)
  • Firebase Auth (generous free tier), Hosting, Cloud Functions

Best for

  • Mobile app clones (iOS/Android/React Native) needing realtime sync + push

Not for

  • Relational data or SQL needs; web-only apps have leaner options