ToolsSupabase: The Best Open Source Alternative to Firebase for Developers
Discover why Supabase is the top open source alternative to Firebase for developers. Explore its features and benefits in our in-depth article. Read more!
Discover Firebase, a top no-code tools that can simplify your app development process. Streamline your workflow, boost productivity and build without boundaries—read the article now!

TL;DR: Firebase is Google's backend-as-a-service platform covering auth, real-time database, hosting, and serverless functions. It's a strong choice for mobile-first MVPs and real-time apps, but Supabase wins on structured data and open-source flexibility. At Kreante, we've integrated Firebase in 15+ client projects.
Firebase is a backend platform built by Google that gives you a real-time database, user authentication, file storage, cloud functions, and hosting under one roof. You don't manage servers. You configure services through a console and connect them to your frontend.
It's not a no-code tool in the traditional sense, but it integrates cleanly with LowCode/AI stacks: FlutterFlow, Bubble, WeWeb, and most modern frontend frameworks connect to Firebase natively.
We built HoopSquad, a basketball community app for the US market, using FlutterFlow and Firebase. The Firebase Realtime Database handled live game feeds and user stats with 60fps animations delivered on mobile. Firebase Auth managed social login (Google, Apple) without us writing a single line of auth code. What would have taken 3+ weeks of backend setup was production-ready in one sprint.
That's the real pitch for Firebase: speed on the backend so your team can focus on product.
Supports email/password, Google, Apple, Facebook, phone, and anonymous login. Works out of the box with FlutterFlow and Bubble. Session management, password reset, and email verification are included.
Firebase ships with two database options, which confuses a lot of teams. Here's the practical difference:
| Feature | Realtime Database | Cloud Firestore |
|---|---|---|
| Data model | Single JSON tree | Document/collection hierarchy |
| Best for | Chat, live counters, presence | Complex queries, structured data |
| Offline support | Basic | Full (mobile) |
| Pricing | Per GB stored/downloaded | Per read/write operation |
| Scale | Single database (sharding needed) | Multi-region, auto-scales |
For most new projects, Firestore is the right default. Use Realtime Database only for low-latency live features like a chat ticker or live scoreboard.
Serverless functions triggered by database events, HTTP requests, or auth actions. No server provisioning. Cold start latency can be 1-3 seconds on the free tier, which matters for UX-sensitive flows.
Static and dynamic hosting via global CDN. SSL included. One-command deploy with Firebase CLI. Works well for Jamstack sites and SPAs, less relevant if you're deploying on Vercel or Netlify already.
File storage integrated with Firebase Auth for access rules. Handles profile images, user uploads, document storage. Connected to Firestore via download URLs.
| Criteria | Firebase | Supabase |
|---|---|---|
| Database type | NoSQL (Firestore) | PostgreSQL (relational) |
| Real-time sync | Native, fast | Available (via webhooks/realtime) |
| Auth | Built-in, excellent | Built-in, excellent |
| Vendor lock-in | High (Google ecosystem) | Low (open-source, self-hostable) |
| Complex queries | Limited without workarounds | Full SQL joins, views, RLS |
| LowCode integration | FlutterFlow, Adalo, Bubble | Bubble, WeWeb, Xano-adjacent |
| Pricing at scale | Read/write costs add up | Predictable (row-based) |
| Best for | Mobile-first, real-time, MVPs | Data-heavy apps, SaaS, enterprise |
Short answer: choose Firebase for mobile apps with real-time features and Google ecosystem. Choose Supabase when you need relational data, complex reporting, or want to avoid vendor lock-in.
Firebase has a free tier (Spark plan) that covers most MVP needs: 50k auth users, 1GB Firestore storage, 10GB hosting. The Blaze plan is pay-as-you-go and starts at $0 above free limits.
Where teams get surprised: Firestore read operations at scale. An app with 10k daily active users reading 20 documents each hits 200k reads/day. At $0.06 per 100k reads, that's $120/month before writes and storage. Plan your data architecture to minimize reads.
Yes, for the right use cases. It remains the fastest path to a production-ready mobile backend. If your app is mobile-first with real-time requirements, Firebase is still the strongest option in the LowCode/AI stack.
Yes. Firebase scales automatically. The main constraint is cost at high read volumes, not technical capacity. Model your Firestore reads per user before moving from the free tier.
Xano is a purpose-built LowCode backend with a visual API builder and relational database. Firebase is a BaaS with NoSQL storage. If you're building in WeWeb or Bubble and need complex business logic, Xano wins. If you're in FlutterFlow with real-time data, Firebase wins.
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