Made in switzerland

This is Threema

Threema is a 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
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
Synchronize contacts
Find your friends on Threema automatically by synchronizing your contacts. Or add them manually if you prefer – it's your choice.
Easily encrypt and share media
Easily encrypt and share media
Send photos, videos, polls, voice messages and your current location with the same encryption grade as your text messages.
Scan Threema IDs
Scan Threema IDs
Don’t trust any third party with key exchange — scan your friends’ IDs right within the app the next time you meet them.
Secure Group Chat
Secure Group Chat
Group chat with real asymmetric end-to-end encryption, managed on your device and not our servers.
Swiss Quality
Swiss Quality
Our servers are located in Switzerland. The software is developed exclusively in Switzerland.