The Backend Revolution
Frontend developers no longer need backend teams to launch apps. Firebase pioneered this, but Supabase is stealing its crown.
Firebase: The Google Giant
Firebase uses a NoSQL document database. It's incredibly fast for real-time chat apps and has amazing SDKs for iOS and Android. However, complex queries are notoriously difficult.
Supabase: The Postgres Powerhouse
Supabase is built on standard PostgreSQL. You get all the relational power, complex JOINs, and SQL constraints, combined with real-time subscriptions and a built-in Auth system.
Verdict
If you have highly relational data (users, orders, products), Supabase is far superior. If you need offline-first mobile sync and simple real-time data, Firebase still holds up.