What makes Threema special?

Threema is the world’s best-selling secure messenger. It sets itself apart from others in the following respects:

  • Guaranteed privacy: Threema is designed to generate as little data on servers as technically possible.
  • Full anonymity: You are not forced to provide any personal information (such as your phone number or email address) in order to use Threema.
  • Open source: To provide full transparency, the Threema apps are open source. Anyone knowledgeable enough can confirm Threema’s security on their own.
  • Optional contact synchronization: It’s not necessary to grant access to the address book in order to use Threema.
  • Comprehensive encryption: In Threema, all your communications are end-to-end encrypted – not just text messages and voice and video calls but also group chats, media files, and even status messages.
  • Rich functionality: Threema is versatile and feature-rich.

Find out how Threema stacks up against other messengers like WhatsApp, Signal, or Telegram in the comprehensive messenger comparison.

With Threema Work and Threema Gateway, Threema also provides solutions for secure communication in business contexts.