Comparison
Supabase vs Firebase for an MVP
Short answer: pick Supabase if you want Postgres and SQL you will still like in 18 months. Pick Firebase if your team already lives in Google’s client SDKs and realtime is the product. Both can be production. Neither fixes missing authz.
The real difference
Supabase is Postgres with auth, storage, and realtime bolted on in a way that maps to SQL. Firebase is a document + realtime platform with excellent mobile SDKs. AI agents generate both; they also generate insecure rules for both.
MVP default we use
Next.js + Supabase when the product is relational (orgs, roles, billing). Firebase when the founder already has a Flutter/Firebase app or the product is presence/chat-first. See the stack pages for combinations.
FAQ
Can I migrate later?
Yes, at a cost. Auth and file URLs are the painful parts. Choose for the next 12 months, not forever.
Related
Stuck on the backend pick?
Tell us the data model in one paragraph. We’ll say Postgres or Firebase — or that it does not matter yet.
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