Where most growing Firebase apps are
Firebase got your app live fast. Supabase gives you Postgres underneath: real queries, joins and row level security your whole team can read. We move your Firestore data, your users and their logins, and your files, while the app keeps running.
How we move a Firebase app to Supabase
Collections into tables
Supabase's own tooling copies each Firestore collection into a Postgres table. We go further, splitting nested documents into related tables your queries can join.
Logins that keep working
Firebase hashes passwords with scrypt. We bring its hash settings across and verify each password on first login, so users sign in as usual and never see a reset email.
Security rules rebuilt
Firestore security rules become row level security policies in Postgres. We write a policy for every access path and test each one against real roles before the cutover.
Storage and functions
Files move to Supabase Storage and Cloud Functions become edge functions or database logic. The app keeps running on Firebase until the moment traffic switches.
How it works
- 01
Map the data
Every collection, rule, function and storage bucket gets mapped to its new home in Postgres before anything moves.
- 02
Move and rehearse
Data, users and files move into Supabase and get rehearsed until counts and logins match, while Firebase keeps running.
- 03
Cut over and hand off
A final sync, then traffic switches. You own the Supabase project, the code and the docs from day one.
Starting at $6,000
Delivered as a Code Rescue: fixed scope and price, agreed after the review. Building something new on Supabase? See Supabase developers.
Plan a Firebase migration We came to Zeroic for one fixed-scope build and never left. 
built the AI into WordUp and kept finding more worth shipping - we doubled our retainer hours inside the first month. He tells us what's worth building before he builds it.
Work we've shipped
How we can help
Four ways to work with us - pick what fits, switch when it doesn’t.
Audits
Find what's broken - or whether AI is worth it - before you build.
Learn moreMVP Sprint
Zero to production in 5-6 weeks. A real product, not a prototype.
Learn moreRetainer
A senior engineer embedded on your team, month to month.
Learn moreCode Rescue
Vibe-coded app breaking under real users? We rebuild it to hold.
Learn moreFAQ
Frequently asked questions
How much does a Firebase to Supabase migration cost?
Code Rescue engagements start at $6,000 for 2-4 weeks. We agree the full price with you after the review, before any data moves. Want an outside view first? An audit, from $1,000, maps your data and rules before you commit.
Do users have to reset their passwords?
No. We carry Firebase's scrypt hash settings across and verify each password on the user's first login, so they sign in exactly as before.
What happens to nested Firestore documents?
They become proper related tables. Supabase's tools copy each collection as it is; we split nested data into tables you can query and join.
Does the app stay live during the move?
Yes. Firebase keeps serving your users while we rehearse the move. The cutover is a final sync and a switch of traffic.
Do we own everything you build?
Yes, 100%. You own the code, infrastructure, docs and credentials.
