Chat freely. No tracking. No phone number required.
Kohera is a free, open-source chat app for individuals and teams. Send messages, make voice and video calls, and organize conversations in spaces — with real end-to-end encryption and no tracking.
Latest release · GPL-3.0 · Open source
// Features
Kohera gives you the messaging features you expect — groups, calls, file sharing, and strong encryption — without ads, tracking, or a locked-in account.
// Cost
No subscriptions, no premium tiers, no hidden fees. Kohera is licensed under GPL-3.0 and maintained by contributors. You can inspect the source, self-host the web build, or help improve it.
// Platforms
One app that works across all your devices. Native builds for desktop and mobile, plus an instant web client when you just need to log in quickly.
// Open network
Matrix is an open standard for secure, decentralized communication. That means you are not locked into Kohera — or any single company.
Sign in with any Matrix homeserver, or run your own. Your account and contacts stay on the server you trust.
Message people using other Matrix apps. No walled gardens. No forced app downloads for your contacts.
Your data is portable. Switch to another Matrix client without losing your account, rooms, or message history.
// Privacy
Kohera does not run servers that store your messages or contacts. Your account lives on the Matrix homeserver you choose. Messages and calls are protected with end-to-end encryption. There are no ads, analytics, tracking, or telemetry SDKs.
// FAQ
No. You can sign up with just a username and password on a Matrix homeserver of your choice.
Yes. Kohera is open-source software released under the GPL-3.0 license. There are no subscriptions, ads, or premium tiers.
Yes. Just enter your existing homeserver and credentials. Your rooms, contacts, and history will be there.
In encrypted rooms, only the participants can read them — not Kohera, not the homeserver operator, and not any third party.