Threema is known for its strong security features, primarily due to end-to-end encryption. Unlike many messaging apps, it does not require a phone number or email to register, ensuring user anonymity and privacy. It also uses open-source cryptographic protocols that are regularly audited for transparency and trustworthiness.

Yes, Threema can be used anonymously as it does not require a phone number or email for registration. Instead, it creates a unique Threema ID for each user, enabling communication without sharing personal information. This makes it attractive to users prioritizing privacy and anonymity.

Threema is a paid app that requires a one-time purchase fee for download. This payment model supports its privacy-focused approach by eliminating the need for advertisements or data monetization. Although it is not free, many users consider the cost justified by its enhanced privacy and security features.

Threema is accessible on multiple platforms, including Android and iOS. It also offers a web client for desktop use, allowing users to access their messages on larger screens. Its cross-platform availability ensures seamless communication across various devices.

Threema emphasizes data privacy by using end-to-end encryption for all messages, calls, and shared media. It does not store identifiable data on its servers. Being based in Switzerland, Threema complies with strict Swiss privacy laws, providing an additional layer of protection for user data.