All encryption happens on your device, and asymmetric cryptography ensures that only the intended receiver can read your messages.
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
Send photos, videos, polls, voice messages and your current location with the same encryption grade as your text messages.
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
Group chat with real asymmetric end-to-end encryption, managed on your device and not our servers.
Our servers are located in Switzerland. The software is developed exclusively in Switzerland.