Threema is a secure messenger that offers privacy and anonymity to its users. The service is designed to generate as little data on servers as possible, and all communication is end-to-end encrypted, including messages, voice and video calls, group chats, files, and status messages. Threema is fully compliant with the European privacy legislation (GDPR). The app is versatile and feature-rich, allowing users to write text and send voice messages, make voice and video calls, share videos, pictures, and locations, send any type of file, create groups, conduct polls, and more. Threema is open source, and the source code is open for everyone to review. The app is not financed by advertising and does not collect user data.

Threema offers full anonymity to its users, and each user receives a random Threema ID for identification. A phone number or email address is not required to use Threema. The app is available on desktops through Threema Web. Threema's servers are located in Switzerland, and the software is developed in-house.

Threema is a secure and private messenger that offers comprehensive features and full anonymity to its users. The app is open source, and the source code is open for everyone to review. Threema is not financed by advertising and does not collect user data. The app is available on desktops through Threema Web, and the servers are located in Switzerland.

Threema is fully compliant with the European privacy legislation (GDPR), and the app is designed to generate as little data on servers as possible. All communication is end-to-end encrypted, including messages, voice and video calls, group chats, files, and status messages. Threema offers full anonymity to its users, and each user receives a random Threema ID for identification. The app is versatile and feature-rich, allowing users to write text and send voice messages, make voice and video calls, share videos, pictures, and locations, send any type of file, create groups, conduct polls, and more.