Threema is a new mobile messaging app that puts security first. With true end-to-end encryption, you can rest assured that only you and the intended recipient can read your messages. Unlike other popular messaging apps (including those claiming to use encryption), even we as the server operator have absolutely no way to read your messages.

End-to-end encryption

All encryption happens on your device, and asymmetric cryptography ensures that only the intended receiver can read your messages.

Synchronize contacts

Find your friends on Threema automatically by synchronizing your contacts. Or add them manually if you prefer – it's your choice.

Share media

Send photos, videos and your current location with the same encryption grade as your text messages.

Scan IDs

Don’t trust any third party with key exchange — scan your friends’ IDs right within the app the next time you meet them.

Currently available for the iPhone. Android version in development.

Made in Switzerland.