Both give you a database, auth, storage, and real-time updates without building a backend from scratch — but they start from opposite assumptions. Firebase is a managed NoSQL platform from Google; Supabase is a Postgres-based, largely open-source alternative. The right pick depends on your data shape and how much you care about portability.
If your data has real relationships — and most business applications do — Supabase's SQL foundation saves pain later, and the open-source option keeps you from being fully locked in. Firebase remains a solid choice for document-shaped data and mobile-heavy apps that lean on Google's ecosystem. Neither is wrong; the data model is usually the deciding factor.
Not exactly — the underlying data models are different (relational vs. document-based), so migrating usually means restructuring your data rather than a one-to-one swap. Supabase covers the same core needs (auth, database, storage, real-time) but the schema design work is different.
It depends on usage patterns. Firebase's pay-per-operation pricing can get expensive fast for read-heavy apps with lots of small queries. Supabase's size- and compute-based pricing tends to be more predictable, but a high-traffic app can still get costly on either platform — model your expected usage before committing.
Yes, Supabase's core components are open-source and can be self-hosted, which is one of its main differentiators from Firebase. Self-hosting adds operational overhead, so most teams start on the managed service and keep self-hosting as an option rather than a day-one requirement.
Firebase has the more mature mobile SDKs and a longer track record with iOS and Android, which matters if you need deep offline sync or push notification integration. Supabase's SDKs have improved significantly, but if mobile is the primary platform and you want the most battle-tested tooling, Firebase has an edge.
Tell us about your data and scale, and we'll recommend Supabase, Firebase, or something else in a 30-minute call.