Firebase vs Supabase vs Serverpod in 2026: The Backend Decision Most Flutter Devs Get Wrong

Firebase crashed iOS apps for hours, Serverpod 4 shipped, and AI tools now pick Supabase by default. Here’s what each really costs per month

On September 29, a bad config change on Google’s side made iOS apps using Firebase Analytics crash. Apps nobody had updated. The rollback took about two and a half hours, and some apps kept crashing for up to six.

Two weeks earlier, Serverpod 4 shipped and made “full-stack Dart” a real option. Three days later, Supabase announced it is buying Turso.

And if you ask an AI for a stack today, it says Supabase. A study of 75 AI answers found Supabase in 89% of them and Firebase in none.

I run about 16 Flutter apps on Firebase. So I priced all three for a setup like mine, using only public pricing pages.

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Three backends, one Flutter app, very different bills · Image made with Gemini

The 30-Second Version

Most Flutter devs compare backends for one app. That’s the mistake. Compare them for the next ten apps you’ll ship, because that’s where the bills split.