Firebase Pricing in May 2026

Firebase's pricing follows usage-based tiers: Spark Plan free with significant limits (1GB Firestore, 10K daily reads, 20K writes, 5GB storage), Blaze Plan pay-as-you-go for production usage. Real-world Firebase bills for typical mobile/web apps land at $50-500/month for early-stage; high-traffic consumer apps hit $5K-50K/month at scale.

The Free Spark Plan offer covers most early-stage mobile/web app needs indefinitely. Eligibility is broad. The strategic decision: Firebase's value is the Google platform for building and scaling mobile and web applications — auth, Firestore (document database), Realtime Database, Cloud Functions, Hosting, ML Kit, and analytics in one platform. The differentiator is the mobile-first developer experience — mature SDKs for iOS, Android, Flutter, and web with offline-first patterns and real-time data sync. For mobile-app-anchored products, Firebase is the default for good reason. The free tier is the right time to validate whether Firebase's specific approach matches your mobile/web app needs. For broader BaaS alternatives, Supabase is the modern open-source-leaning alternative — Postgres-based with auth + storage + realtime + edge functions, often preferred for Postgres compatibility. The Firebase vs Supabase decision often splits: Firebase for mature mobile SDKs and Google ecosystem; Supabase for Postgres-anchored teams with open-source portability. Appwrite is the open-source self-hostable alternative. PocketBase targets simpler self-hosted with single-binary deployment. AWS Amplify plays the BaaS role in AWS-native shops. For specifically Firestore (document database), MongoDB Atlas competes with broader features; Convex targets reactive document databases with TypeScript-first focus. For specifically Realtime Database (real-time sync), Supabase Realtime, Convex, and Liveblocks target this. For specifically auth, Auth0, Clerk, Supabase Auth, and others compete. For most mobile-first products, Firebase remains the default; web-first products increasingly choose Supabase or Convex.