: Using cracked or illegitimate versions of Threema can result in your Threema ID being permanently blocked.
The fees support the development of their open-source Android and iOS apps and the maintenance of their proprietary server infrastructure, which is hosted exclusively in Switzerland. 2. The Risks of "Free" License Keys
Threema is a popular messaging app that prioritizes user privacy and security. With Threema, all messages, calls, and media are encrypted end-to-end, ensuring that only the sender and recipient can read or listen to them. Threema also doesn't require a phone number or personal data to sign up, making it a great option for those who value anonymity.