Open Source SQL vs Google's Realtime Giant.
Firebase defined the Backend-as-a-Service category. Supabase arrived as the 'Open Source Firebase Alternative'. It's a battle of philosophies: Proprietary vs Open Source, NoSQL vs SQL.
I give you full PostgreSQL. The world's most advanced open source database. You can run complex joins, geospatial queries, everything. You force users into a proprietary NoSQL box.
My realtime capabilities are legendary. Changes propagate instantly. It's effortless. And I scale to millions of connections without you lifting a finger.
You own the developers. Once they use your proprietary APIs, they can't leave. I am just Postgres. You can `pg_dump` your data and host it anywhere else tomorrow.
I am integrated into Google Cloud. Analytics, Crashlytics, AdMob... it's a seamless suite for mobile and web apps. You are just a database and auth.
My pricing is predictable. No surprise bills. And you can self-host me for free via Docker.
If you need relational data, avoid vendor lock-in, and love SQL, Supabase is the best choice. If you are building a mobile app that needs deep Google integration and simple realtime syncing, Firebase wins.