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A Supabase alternative, and what carries over

Stackap is an alternative to Supabase for the data side only: your tables and rows, the generated data API and file storage carry over, but sign-in, realtime and edge functions do not.

The short answer

Supabase is several products behind one dashboard, and the question for any move is which of them your app uses. A project that uses it as a Postgres database with a generated API and some file storage can move. A project built around its sign-in and realtime features cannot, whatever the destination.

Stackap's data side is built from the same open-source parts, so the change is mostly in who runs them. The checklist below is ordered by how often each feature blocks a move.

Do the work in a fixed order. Settle sign-in first, because it decides everything. Then inventory functions and triggers, then copy the data into a staging project, then move files, then compare, and only then plan a cutover. Each step before the last is cheap to undo.

Side by side

Supabase feature	On Stackap	Effect on a move
Sign-in and user management	Not included	Blocks the move until the app brings its own
Row-level security policies tied to users	Postgres supports them; the tie to sign-in is gone	Rewrite policies that read the signed-in user
Realtime subscriptions	Not included	Blocks, or replace with polling
Edge functions	Not included	Move the logic into the app
Generated REST API	Yes, same engine	Client code keeps working for data calls
File storage	Yes, same service on R2	Copy objects, rewrite stored URLs
Database functions, triggers and views	Postgres, yes; copied separately	Extract and apply them by hand
Point-in-time recovery	Not included	Daily backups instead
Dashboard table editor	A table browser per project	Similar, simpler

Choose Supabase if

Sign-in or realtime is part of how your app works.
You want someone else to operate your database and offer point-in-time recovery.
You rely on database features that the hosted product wraps in a dashboard.

Choose Stackap if

You use Postgres, the generated API and storage, and bring your own authentication.
You want your data, files and app on one server, with one backup system.
You want to hold the encryption key and the backup bucket yourself.

What the money looks like

Supabase prices by plan and usage, which changes, so check its pricing page. On Stackap the database costs the share of a server you already rent.

The saving is smaller than on hosting, because a database is cheap to run and expensive to be responsible for. On Stackap that responsibility is yours, with daily backups and no point-in-time recovery.

Early-access scope

No sign-in, realtime or edge functions, and none is on a published schedule.
The migration copies tables and rows. In one inventory, the great majority of database functions lived only in the live database and had to be extracted by hand.
Backups are daily, so recovery can lose up to a day.
The data API has been run for one project, not exercised across every feature of the client library.

Questions

What is the best alternative to Supabase?

If you use Supabase mainly as Postgres with an API and storage, running your own on Stackap is the closest match. If you use its sign-in or realtime, no alternative here replaces them.

Can I keep Supabase for sign-in only?

Technically yes, but your policies and data would then live in two systems. We do not recommend splitting that way without a plan.

Does the client library still work?

For data and storage calls, in the one project tested. Calls to the sign-in service will not.

Facts about other products on this page were last checked on 2026-10-03. Check their own pages before you decide.

Stackap is in early access. Tell us what you run and we will reply with a straight answer about whether it fits.

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Last updated 2026-10-03.