Threema is the world’s most secure messaging app, designed to keep your conversations private and free from the prying eyes of hackers, corporations, and governments. With Threema, you can communicate securely, either via text, voice, video, or group calls.
Privacy and Anonymity
Threema is designed with privacy at its core. It generates minimal data on its servers, ensuring that your group memberships and contact lists are only stored on your device, never on Threema’s servers. Messages are deleted once they’ve been delivered, preventing misuse of your data. Additionally, local files are stored in an encrypted format on your device. Threema complies with European privacy laws (GDPR), ensuring that your personal data remains safe and protected.
Rock-Solid Encryption
Threema uses end-to-end encryption to secure all forms of communication on the platform, including text messages, voice calls, video calls, group chats, and even status updates. The encryption process is based on the trusted NaCl cryptography library, and encryption keys are generated and stored locally on users' devices.
Comprehensive Features
Threema is not only secure but also rich in features, making it a complete messaging solution:
- Text messaging and voice notes
- Voice, video, and group calls
- Sending any type of file (e.g., PDF, MP3, animated GIFs)
- Polls and reactions using emojis
- Customizable themes (light and dark mode)
- QR code-based identity verification
The desktop app and web client allow users to access Threema from their computers, further enhancing its versatility.
Servers in Switzerland
All Threema servers are located in Switzerland, a country renowned for its stringent privacy laws. This ensures that your data remains protected under some of the strongest privacy regulations in the world.
Full Anonymity
Threema’s unique approach to user identification means that no personal information, such as a phone number or email, is required. Instead, each user is given a random Threema ID for complete anonymity.
Open Source and Security Audits
Threema’s source code is open for public review, allowing security experts to verify its integrity. The app is regularly audited by renowned security professionals to ensure that it meets the highest security standards.
No Ads or Trackers
Threema is free from advertisements and trackers, meaning your data will never be sold or used for commercial purposes. The app is funded through its purchase price, not by exploiting user data.
FAQs
1. Is Threema actually secure?
Yes! Threema end-to-end encrypts all communication, including messages, calls, and files, ensuring only the intended recipient can access your content. It uses the open-source NaCl cryptography library for secure encryption.
2. Do you have to pay for Threema?
Yes, Threema is a paid app. The price helps cover the costs of app development and server maintenance. This ensures that the app remains independent and doesn’t rely on user data monetization.
3. Is Threema a monthly fee?
No, Threema is a one-time purchase. There are no recurring charges, and all features are included without any paid upgrades.
4. Who is Threema owned by?
Threema is developed by the Swiss company Threema GmbH, based in Pfäffikon SZ, Switzerland. All servers are located in Switzerland, ensuring compliance with Swiss privacy laws.
5. Is Threema really anonymous?
Absolutely! Threema doesn’t require any personal information to use the app. Instead, users receive a unique Threema ID for complete anonymity, and no personal data is stored on Threema’s servers.
Version History
v5.8.1—13 Feb, 2025
Minor bug fixes and improvements. Install or update to the newest version to check it out!
v5.8.0—11 Mar, 2025
v5.7.0—11 Mar, 2025
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