Base44 to Supabase: what this migration actually takes

Does Base44 use Supabase?

No. Lovable and Bolt.new are the ones that run on Supabase. Base44 doesn't.

I get why everyone assumes it does. Supabase is the database everyone in vibecoding knows. Lovable apps literally live on it. Base44 even has a migration screen that asks for your Supabase credentials. But that screen is for importing apps into Base44 from Lovable and Bolt (it reads their Supabase databases and pulls the data in). There's nothing going in the other direction.

So what does Base44 actually run on? Its own database, and it's a different kind of database altogether: a MongoDB-style document database, not a relational one like Postgres. Your entities aren't tables with columns and foreign keys. They're collections of JSON-like records. There's no enforced schema, which is exactly why you can change your data model mid-chat and nothing asks you to run a migration. Relations between records are just id references the app follows. And the security rules that decide who sees which record are enforced by Base44's server, on every request.

And here's the part that matters for your plan: that database isn't a separate piece you can take out. It sits inside Base44's backend, together with your users and login, your uploaded files, the AI and email calls, the backend functions, the automations, everything. None of that is in your export. The exported code just calls it, on Base44's servers.

So when someone in a thread tells you Base44 runs on Postgres and Supabase is the natural match, that's just wrong. And the plan built on top of it (export the code, swap the database underneath) assumes a swappable database that isn't there.

What migrating Base44 to Supabase really involves

On paper, moving a Base44 app to Supabase sounds like moving data from one database to another. It isn't that. It's translating your app between two different database models, and then rebuilding everything Base44's backend was doing around that data. Let me go through the actual work.

First, the translation. Your records have to become tables. Someone, usually an AI, has to decide the columns, the types, the constraints, the foreign keys, for data that never had any of these. Every wrong guess shows up later as a broken screen or a record that won't save. Same with permissions: Base44's rules about who sees what have to be recreated as Postgres policies that behave exactly the same, and if they don't, a user opens the app and sees someone else's records.

Second, getting your data out. The code export doesn't include your live data at all. What Base44 gives you is a CSV download, table by table. The CSVs don't include hidden and private fields, and they don't include the authentication data behind your users either.

Third, the rebuild list. Everything your app did through Base44's backend has to be rebuilt on the Supabase side before the app works at all. Login and user accounts: the DIY recipes literally end with "add a login page", which means your existing users don't come along, they get to sign up again. The AI features. Email. File uploads, plus every stored URL that still points at Base44's storage. Every backend function rewritten as an edge function. Every automation set up again on a scheduler. There are drop-in SDKs and automated converters for this, and they do handle the database calls. The AI, email, files and functions come back to you as placeholders and a to-do list.

Fourth, the debugging. At some point the app compiles, deploys and looks done. It isn't. Now you find out what the translation missed, one screen at a time. The AI you're using to convert the code starts repeating itself. An automation just never fires, and nobody notices. A form saves into a column with the wrong type. Existing users can't log in. And if one permission policy came out wrong, a customer sees another customer's data. This is the part nobody plans for, and it's where most of the time goes.

Can you pull it off? Honestly, yes, some people do. If you're technical and your app is simple, a few focused days with Claude Code or Cursor can get you there. But the more your app actually uses Base44 (login, permissions, functions, automations, agents, AI), the less this looks like a migration and the more it turns into rebuilding Base44's backend yourself, on a database it wasn't built for. That's also why freelancers quote hundreds to thousands of dollars for this job. The quotes aren't a scam. That's what a rebuild costs.

Can you connect Supabase to a Base44 app instead?

Yes, this part is real. Base44 has a Supabase connector, and your backend functions can talk to a Supabase project you own. If your app needs to read and write an outside database, it genuinely works. (This is usually what people mean when they ask whether Base44 "works with" Supabase.)

But it doesn't get you out of anything. Your app's own entities, users, uploads and login all stay on Base44's backend. And there's a catch people burn hours on: Base44 doesn't expose secrets to frontend pages, so your pages can't talk to Supabase directly. Every call has to go through a backend function, and backend functions are a paid-plan feature that uses integration credits. So people wire this up hoping to cut costs, and end up running two backends: the Supabase they added, plus the Base44 one that still runs the app and still bills every month.

Bottom line: the connector is a way to add Supabase to a Base44 app, not a way to move your app there.

The migration that actually works: move the app as is

Supabase is fine, and your app is fine. They're just not built for each other. A Base44 app is built on Base44's backend, so any exit that swaps that foundation turns into a rebuild. What actually works is the opposite: leave the app exactly as it is, database model and all, and change who owns the infrastructure it runs on.

I'm not guessing here. I tried your exact plan first. The first version of EscapeBase44 was literally a Base44-to-Supabase migrator: it converted apps into Postgres and deployed them to people's own Supabase and Vercel accounts. And it mostly worked. But apps kept coming out subtly wrong. Admin checks broke because they leaned on Base44's server logic. Relations misbehaved in ways that only showed up when a real user clicked something. I spent months chasing these bugs, refunding real people's migrations along the way, and honestly it was driving me nuts. Every single bug traced back to the same root: these apps were never built on Postgres, and no amount of fixing was going to change that.

So I threw the conversion away and went the other way: I reverse-engineered Base44's entire backend, every endpoint, and rebuilt the migration so it doesn't translate anything. That's what EscapeBase44 is today. It moves your existing app, unchanged, onto accounts you own: the same MongoDB-style database it was built on (a MongoDB Atlas account of yours, free until heavy traffic), with a replica of Base44's backend running as your own. Everything moves: frontend, backend, database and every record, users and auth, backend functions, automations, integrations, agents and their conversations, AI, files, secrets, SEO and all the weird configs tying it together. Nothing gets reinvented on the way.

Your users keep logging in exactly like before. You can keep changing the app through an AI chat, just like you did in Base44, or open the code with Claude Code, Cursor or any developer, since the complete codebase sits in a GitHub repo you own. And your Base44 app stays untouched the entire time: the migration only reads from it. Once the migrated app is running and you're happy, you cancel Base44.

Where Supabase fits after you leave

And btw, you don't even give up Supabase. Migrated apps run their backend functions and scheduled tasks on Supabase Edge Functions, on a Supabase account you own. Supabase is great infrastructure. If your app had started on it, I'd tell you to stay there. But your app started on Base44. After the migration you own that part too, and Supabase still has a real place in your stack. Just not as your app's database.