Keymute

Keymute is a private messenger built on the Signal Protocol. Every message, photo, file and call is end-to-end encrypted on your device — nobody in between, not even us, can read it.

NO PHONE NUMBER, NO CONTACT UPLOAD Sign up with just a username. Keymute never asks for your phone number and never uploads your address book. Membership is invite-only, so you decide who can find you.

END-TO-END ENCRYPTED BY DEFAULT • Signal Protocol with post-quantum (Kyber) key agreement and Double Ratchet • A fresh key for every message; groups use sender keys • Private keys are generated on your device and never leave it • Safety numbers warn you if a contact's identity key changes

EVERYTHING YOU EXPECT FROM A MESSENGER • Text, photos, videos, files and voice messages • Reply, forward, link previews and share from any app • Group chats • Disappearing messages per chat or as a default • View-once photos that are deleted the moment they're seen • Block unwanted contacts

VOICE & VIDEO CALLS Crystal-clear 1:1 and group calls (up to 4 people) over WebRTC with DTLS-SRTP encryption. Calls connect devices directly; no server can hear or see them. Incoming calls ring even when your phone is locked.

WHAT THE SERVER STORES Only what is needed to deliver messages: your username, your devices' public keys, a push token and encrypted messages waiting to be delivered. No content, no contacts, no location. You can delete your account and all of it at any time from Settings.

Available in English, Turkish, Spanish, German, French, Italian and Russian.

Privacy policy: https://keymute.com/privacy

What's New (1.0.0): First release. End-to-end encrypted messaging, group chats, voice & video calls, disappearing messages and view-once photos.