Threema is the best-selling messaging app, it consistently scores highest in messenger tests, and users give it the highest ratings.
- Top ratings and reviews
Threema consistently receives the highest ratings in the app shops. On the Google Play Store, the app scored 4.6 out of 5 stars based on more than 68,000 reviews.
- The most popular chat app
Since 2014, the Threema app has continuously topped the app charts. As of June 2021, Threema has attracted more than 10 million users, including more than 2 million Threema Work users.
- Winner of numerous comparative studies
Threema regularly tops messenger rankings and wins awards for strong security, unparalleled privacy protection and ease of use.

Unlike most messaging services, Threema does not require registration, phone number or email address. Each user generates a random Threema ID which serves as a unique identifier, allowing the service to be used completely anonymously. The service requires little metadata, which plays a key role as the lack of much data prevents potential misuse and all user data is protected from potential access by hackers, data collectors and intelligence services.
Every type of communication – including voice and video calls, group chats, media, files and status messages – is end-to-end encrypted, so no one but the recipient can read the messages sent. The encryption uses the well-known open source library NaCI. The key combination is generated directly on the user’s device without involving a server. The validity of the encryption can be checked at any time using Validation Logging, and all technical details about Threema’s security are documented in the Cryptography Whitepaper.
The main advantages of Threema compared to other suppliers:
- Guaranteed privacy: Threema is designed to generate as little data as possible on servers.
- Complete anonymity: There is no need to provide personal information (e.g. telephone number or email address).
- Open source code: To ensure full transparency, Threema applications are open source. Anyone sufficiently knowledgeable can independently check the security of Threema.
- You do not need to synchronise your contacts: you do not need to provide access to your address book to use Threema.
- Comprehensive encryption: In Threema, all communication is encrypted – not just text messages, voice and video calls, but also group chats, media files and even status messages.
- Rich functionality: Threema is a versatile and multi-functional platform.
The Threema app’s interface is available in 20 languages.
iIT Distribution is the official distributor of Threema, provides distribution and promotion of solutions in Ukraine, Kazakhstan, Uzbekistan, Georgia, Poland and Azerbaijan as well as professional support for their design and implementation.