SimpleX Chat 4+

SimpleX Chat - a private & encrypted messenger without any user IDs - private by design!

Make a private connection via link or QR code – the most secure way to connect.

SimpleX - the first messaging platform that has no user identifiers of any kind - 100% private by design!

Full privacy of your identity, profile, contacts and metadata: unlike any other existing messaging platform, SimpleX uses no phone numbers or any other identifiers assigned to the users - not even random numbers. This protects the privacy of who you are communicating with, hiding it from SimpleX platform servers and from any observers.

Complete protection against spam and abuse: as you have no identifier on SimpleX platform, you cannot be contacted unless you share a one-time invitation link or an optional temporary user address. Read more.

Full ownership, control and security of your data: SimpleX stores all user data on client devices, the messages are only held temporarily on SimpleX relay servers until they are received.

Decentralized network: you can use SimpleX with your own servers and still communicate with people using the servers that are pre-configured in the apps or any other SimpleX servers. Read more.

You can connect to anybody you know via link or scan QR code (in the video call or in person) and start sending messages instantly - no emails, phone numbers or passwords needed.

Your profile and contacts are only stored in the app on your device - our servers do not have access to this information.

All messages are end-to-end encrypted using open-source double-ratchet protocol; the messages are routed via our servers using open-source SimpleX Messaging Protocol.

The app sends local notifications only when messages or connection requests arrive - the app checks for the new messages every 10-15 min, but if you stop using the app it may stop checking for the new messages.

Please send us any questions via the app (connect to the team via settings!), email chat@simplex.chat or submit issues on GitHub (https://github.com/simplex-chat/simplex-chat/issues)

Source code: https://github.com/simplex-chat/simplex-chat

Follow us on Twitter (@SimpleXChat) and Reddit (r/SimpleXChat/) for the latest updates.