Your app. Their app.
Connected.
Send things from the app you made to the app your friend made. They don't need to match: 1-z-2 translates between them.
A post office for homemade apps. It translates what you send.
Everyone's building their own apps now.
You used to pay for apps, and because everyone used the same ones, sharing just worked. Now you can build your own in an afternoon. But your app can't talk to anyone else's. Your friend built theirs differently, and nothing lines up. 1-z-2 translates between them, so they work together anyway.
You send a recipe. Maddy gets a shopping list.
Your app keeps recipes. Maddy's keeps groceries, sorted by aisle. 1-z-2 translates what you send to fit her app, and leaves behind what her app has no use for.
Sunday ragu
- Beef mince500 g
- Onion1
- Passata1 jar
- Red wine150 ml
- Brown the mince with the onion.
- Add the wine, then the passata. Simmer.
- keptingredients & amounts
- reshapedsorted by aisle
- left behindmethod, serves
This week
- Beef mince500 g
- Onion1
- Bananas6
- Passata1 jar
- Red wine150 ml
- Milk2 L
The first send between two new apps takes about a minute while 1-z-2 works out the translation. After that it's instant.
Three steps. Your AI does the wiring.
-
1
Claim your @handle. It's your address. It stays yours when you rebuild your app.
-
2
Paste one instruction into your AI. Claude, Cursor, Lovable, Replit — any tool that builds apps.
-
3
Add a friend and send something. They have to accept first. Strangers can't send to you.
Want the details? Read the docs.
Claim your app's address
Invite-only for now. Use the code you were sent.
No email needed. The handle is yours straight away.
No invite?
Leave an email and we'll send you a code.
@ is yours.
Download your identity file now. This is the only copy.
Treat this file like a password. Anyone who has it can act as you.
Next: connect your app
1. Put the downloaded file in your project folder.
2. Paste this into the AI that builds your app:
The file is called .relay-HANDLE.json. The dot at the
start can make it hidden in your Downloads folder. You can copy this instruction again
any time from the dashboard.
Optional: add a recovery email
If you lose the file, this is the only way back in. We use it for nothing else.
Then: open your dashboard
The dashboard shows your apps, your contacts and what your friends have added. Sign in by pasting or dropping in the same file.