Alternatives

Firebase alternatives, with prices attached.

Firebase is not one product, so replacing it is not one decision. The database, the auth and the hosting each have different answers.

People leave Firebase for two reasons: a metered bill that scales with reads rather than with users, or a document model that stopped fitting the queries they now need. Both point at different replacements, so the useful question is which part you are actually replacing. Rates below are Google’s published figures, checked 22 August 2026.

The options

SupabaseFree, from $25
The closest whole-bundle replacement: Postgres instead of Firestore, plus auth and storage. The usual destination when the document model is the problem.
AppwriteFree tier, then paid plans
Open-source and self-hostable, closest to Firebase in shape. Worth it if you want the bundle without the metered surprise.
DockupFree, then $5 or $20
Managed PostgreSQL and a container, priced per vCPU-hour and GB-month rather than per read. You bring your own auth library.
Plain Postgres anywhereFrom a few dollars
If Firestore was only ever a key-value store with extra steps, a normal relational database is cheaper, more predictable and easier to query.
Staying on FirebaseSpark free, Blaze metered
The free quotas are generous — 50,000 document reads and 20,000 writes a day, 1 GiB stored, and 10 GB of hosting storage. If you sit inside them, moving saves nothing.

Questions this page gets asked

What is the best Firebase alternative?

Supabase, for most people leaving Firestore, because it replaces the database, the auth and the storage in one move and uses Postgres. If you only need a database and are willing to write your own auth, plain managed Postgres is cheaper and more predictable.

Why is my Firebase bill so high?

Almost always document reads. Firestore meters per read, so a screen that fetches a collection on every render costs in proportion to traffic rather than to data. The Blaze plan is free up to 50,000 reads and 20,000 writes a day, then billed at the underlying Google Cloud rates.

What does Firebase Hosting cost after the free tier?

Storage is free to 10 GB and then $0.026 per GB, and data transfer is free to 360 MB a day and then $0.15 per GB. Google’s published rates, checked 22 August 2026.

How hard is it to migrate off Firestore?

Harder than moving a relational database, because there is no dump-and-restore equivalent — documents have to be exported and reshaped into tables, and every query in the application is rewritten. Budget for the query rewrite rather than the data move; the data is the easy half.

Compare something else

Try it against your own workload.

The free plan grants $10 of infrastructure credit at signup, needs no card, and does not sleep.

Start free with $10 credit See the rates