A real database
Your data is stored in collections you can query with SQL or JavaScript, and it is still there after every restart and deploy.
The missing links
Almost finished.Ready to launch.
A prototype can look finished and still lose data, let the wrong people in, or send no email at all. These are the pieces most vibe coded apps are missing, and every one is built into Substrio.
Sign-in that holds up
Passwords, passkeys, email codes, and eight sign-in providers, with roles and permissions on every route.
Email that arrives
Send sign-in codes, receipts, and updates with one API call. Standard sends from your own domain.
Your own domain
Launch at your-app.substrio.com on Free. Standard adds custom domains, with TLS certificates set up for you.
Changes you can undo
Every version runs in a sandbox first. Going live backs up your data, and one call rolls back.
Secrets off the page
Secret keys are stored on the server, where your functions read them, so no secret ends up in your page's source.
How it works
Substrio is a game changer for vibe coded apps.
You keep working the way you already do. Your agent does the setup, and you approve what matters.
Give your agent one line.
Paste the start instruction into Claude, Cursor, or the agent you already use. It creates your account and your app.
Move your app over.
Your agent brings your pages, data, and routes onto Substrio, one step at a time, and tests each one in a sandbox.
Launch, then grow.
Launch on Free at your-app.substrio.com. When your app grows, Standard adds your own domain for $9/month.
Unified apps
Build one app.Connect them all.
Every app you build on Substrio can work with every other one. Your users sign in once and move between your apps as the same person. One app uses another app's data and functions directly, with no HTTP and no shared code, and one agent works across all of them. You choose what each app shares.
One login across every app
A person signs in once with Substrio, and every app connected to that sign-in lets them in without a password.
Read the docsApps that use each other
One app can use another app's functions and queries directly, with no HTTP and no shared code. You choose what each app shares.
Read the docsOne agent across your apps
An agent signs in once, at one app, and uses the tools of every app connected to it, as the same person.
Read the docsYour app is almost there.Finish it on Substrio.
Start free with 1 GB, no credit card, and no time limit. Launch on Free, then grow with Standard for just $9/month.