Threema. The Secure Messenger

Threema is the world’s best-selling secure messenger and keeps your data out of the hands of hackers, corporations, and governments. The service can be used completely anonymously. Threema is open source and offers every feature one would expect from a state-of-the-art instant messenger. The app also allows you to make end-to-end encrypted voice, video, and group calls. Using the desktop app and the web client, you can also use Threema from your desktop. Welcome to Threema, the ultimate messaging app for those who value privacy and anonymity. With Threema, you can rest assured that your personal information is safe and secure, as the app is designed to generate as little data on servers as possible. This means that your group memberships and contact lists are managed on your device only and never stored on our servers. Plus, all messages are immediately deleted after they have been delivered, and local files are encrypted on your mobile device. Threema is fully compliant with the European privacy legislation, so you can trust that your information is in good hands.

But that's not all - Threema also offers rock-solid encryption for all your communication. This includes messages, voice and video calls, group chats, files, and even status messages. Only the intended recipient can read your messages, thanks to the trusted open source NaCl cryptography library used for encryption. And to ensure even more security, encryption keys are generated and safely stored on your device, preventing any backdoor access or copies.

Threema is not just a secure messaging app, it's also packed with comprehensive features. You can write text and send voice messages, edit and delete sent messages on the recipient's end, make voice, video, and group calls, share videos, pictures, and locations, and send any type of file. Plus, you can use the desktop app or web client to chat from your computer, create groups, conduct polls, choose between a dark and light theme, and quickly reply with the unique agree/disagree feature. You can even verify the identity of a contact by scanning their personal QR code and use Threema as an anonymous instant messaging tool. And if you choose to, you can synchronize your contacts for added convenience.

Worried about where your data is stored? Don't be. Threema's servers are all located in Switzerland, and the software is developed in-house. This means that your information is protected by Swiss privacy laws, known for their strict regulations. And with Threema, you can use the app completely anonymously - no need to give up private information or open an account. Each user receives a random Threema ID for identification, so you can rest easy knowing your privacy is respected.

But don't just take our word for it - the source code of the Threema app is open for everyone to review. And to ensure the highest level of security, renowned experts regularly conduct systematic security audits of Threema's code. Plus, Threema is completely ad-free and does not collect user data, so you can use the app without any worries.

If you have any questions or encounter any problems, Threema offers comprehensive support through their FAQs. So why wait? Download Threema now and experience the ultimate in privacy and anonymity for your messaging needs.