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 docsCompare
Pick a platform.See the full breakdown.
Each comparison sets Substrio beside one platform, capability by capability, with the same app priced on both.
Substrio vs. Supabase
A Postgres backend with sign-in, storage, functions, and realtime.
16× lower cost
- Built in: all 17 on Substrio, 5 on Supabase.
- An MCP server for your app's users: built in on Substrio. Supabase: partly built in.
- The same app costs $19/month on Substrio Pro and $315.25/month on Supabase, Vercel, Resend and Mapbox.
Substrio vs. Firebase
Google's app backend with Firestore, sign-in, hosting, functions, and storage.
36× lower cost
- Built in: all 17 on Substrio, 6 on Firebase.
- An MCP server for your app's users: built in on Substrio. Firebase: not offered.
- The same app costs $19/month on Substrio Pro and $685.88/month on Firebase and Google Maps.
Substrio vs. Vercel
Front-end hosting and functions, with databases from Marketplace providers.
16× lower cost
- Built in: all 17 on Substrio, 3 on Vercel.
- An MCP server for your app's users: built in on Substrio. Vercel: separate service.
- The same app costs $19/month on Substrio Pro and $315.25/month on Supabase, Vercel, Resend and Mapbox.
Every capability
Side by side.
Substrio includes all 17 of these capabilities in one platform.
| Capability | Substrio | Supabase | Firebase | Vercel |
|---|---|---|---|---|
| Unified apps | ||||
| One login across every app | Built in | Partly built in | Partly built in | Separate service |
| Apps that use each other | Built in | Not offered | Not offered | Not offered |
| One agent across your apps | Built in | Not offered | Not offered | Not offered |
| Built for agents | ||||
| An MCP server in every app | Built in | Not offered | Not offered | Separate service |
| Your users' agents | Built in | Partly built in | Not offered | Separate service |
| Your agent builds the whole app | Built in | Partly built in | Partly built in | Partly built in |
| Sandbox, then go live | Built in | Partly built in | Partly built in | Partly built in |
| Everything built in | ||||
| Database | Built in | Built in | Built in | Separate service |
| Sign-in and users | Built in | Built in | Built in | Separate service |
| Email to your users | Built in | Partly built in | Partly built in | Separate service |
| Maps and geocoding | Built in | Separate service | Separate service | Separate service |
| Functions | Built in | Built in | Built in | Built in |
| Files | Built in | Built in | Built in | Built in |
| Realtime | Built in | Built in | Built in | Partly built in |
| Site hosting | Built in | Separate service | Built in | Built in |
| Ledger | Built in | Not offered | Not offered | Not offered |
| One bill | ||||
| Egress | Built in | Partly built in | Partly built in | Partly built in |
- Built in
- Partly built in
- Separate service
- Not offered
17 capabilities
Every line about another platform links the page it comes from, checked on October 29, 2026. Open a comparison for each line and its source.
One platform.Every app connected.
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