Your room.
Your key.
Private group chat without an account. Pick a room name and a password, share them, and talk. Kyrum's servers only ever see scrambled text.
We can't read your messages. Here's proof.
Type something, and the second box shows exactly what our server receives. It was encrypted on this device, with a key made from the room password, and the password never leaves your device.
Encrypting…
Type the same words twice and the server sees two different strings. Every message gets a fresh random value, so even repeats give nothing away.
There's no account to leak.
Other messengers start by asking for
- Your phone number
- Your email address
- Your contacts
- Your real name
Kyrum asks for
A room name and a password.
How a room works
- Step 1
Create a room
Choose a room name and a password. You become the owner, and you get a recovery kit that brings your role back on any device.
- Step 2
Share both
Send the room name and the password to the people you want in it. Sending them through two different apps is safer still.
- Step 3
Talk
Messages, photos, files, voice notes and calls, all encrypted on your device before they leave it.
Delete means delete.
Set messages to disappear after anything from five minutes to seven days. Deleted messages and files are erased from our servers, not hidden. The owner can delete the whole room, for everyone, in one step.
Bad signal? Keep typing.
Messages wait safely on your phone and go out exactly once when you're back online. Rooms open without a connection, and calls reconnect when you switch from Wi-Fi to mobile data.
What Kyrum can and can't see
Never sees
- The room password
- Anything anyone writes or shares
- Display names
- Who reacted with what
- What is said on calls
Sees, because delivery needs it
Any service that delivers messages sees this much.
- IP addresses
- When people connect
- How big each message is
- How many people are in a room