Frequently asked questions

Unixgram is a messenger and a social network in one app: private and group chats, secret chats with end-to-end encryption, stories, channels, calls and a feed of posts. It runs on its own UnixProto transport and on our own servers.

Three ways. It has its own transport protocol instead of ordinary HTTP requests, so the connection is persistent and survives drops. The messenger and the social network are one app rather than two. And media files live on our servers rather than in a third-party cloud.

In secret chats the keys are derived on the participants' devices and never leave them; the server stores ciphertext. The transport between app and server is protected separately: X25519 key agreement, HKDF-SHA256 key derivation and encrypted packets. Ordinary chats are encrypted in transit and stored on the server so they can be read from several devices.

The Android app is on Google Play. Versions for iPhone, Windows and Linux are in development. The web version runs in any modern browser with nothing to install.

Yes. The core features are free and there are no ads in private messages. There is a separate Premium tier — wider limits, extra customisation and additional features — and an in-app currency for gifts.

It is the transport protocol Unixgram runs on: five framing options over TCP, optional stream obfuscation, an encrypted channel and session recovery after a dropped connection. The wire format is published and anyone can write a compatible client.

Yes, up to three at once. Switch with a long press on your avatar — no signing out and no re-entering a password.

The timer is set on the chat. When it expires the message is deleted for both participants — from the devices and from the server.