Threema. The Secure Messenger 4+

Secure. Anonymous. Private‪.‬

Threema GmbH

    • 4,99 €



Threema is the world’s best-selling secure messenger and keeps your data out of the hands of hackers, corporations, and governments. The service can be used completely anonymously. Threema is open source, allows to make end-to-end encrypted voice and video calls, and offers every feature one would expect from a state-of-the-art instant messenger. With Threema Web, you can also use Threema from your Desktop.

Threema is designed from the ground up to generate as little data on servers as possible. Group memberships and contact lists are managed on your device only, and never stored on our servers. Messages are immediately deleted after they have been delivered. Local files are stored encrypted on your mobile phone or tablet. All this effectively prevents the collection and misuse of your personal information, including metadata. Threema is fully compliant with the European privacy legislation (GDPR).

Threema encrypts ALL your communications END-TO-END including messages, voice and video calls, group chats, media files and even status messages. You can rest assured that only the intended recipient can read your chats, and nobody else – not even us. Threema uses the trusted open source NaCl cryptography library for encryption. The encryption keys are generated and safely stored on users’ devices to prevent backdoor access or copies.

Threema is not only an encrypted and private messenger but also versatile and feature-rich.

• Write text and send voice messages
• Make voice and video calls (requires iPhone 5s / iOS 10 or above)
• Share videos, pictures and locations
• Send any type of file (pdf, animated gif, mp3, doc, zip, etc.)
• Use Threema Web to chat from your Desktop
• Create groups
• Conduct polls with the poll feature
• Choose between a dark and a light theme
• Quickly and silently reply with the unique agree/disagree feature
• Verify the identity of a contact by scanning their personal QR code
• Use Threema as anonymous instant messaging tool
• Synchronize your contacts (optional)

All our servers are located in Switzerland, and we develop our software in-house.

Each Threema user receives a random Threema ID for identification. A phone number or email address is not required to use Threema. This unique feature allows you to use Threema completely anonymously – no need to give up private information or to open an account.

The source code of the Threema app is open for everyone to review. On top of that, renowned experts are regularly commissioned to conduct systematic security audits of Threema’s code.

Threema is not financed by advertising and does not collect user data.

For questions or problems please consult our FAQs:

What’s New

Version 4.6.18

• Don’t show notifications for messages in group chats you have left
• Audio player is now always dismissed when switching chats
• Other improvements and miscellaneous minor bug fixes

Ratings and Reviews

4.5 out of 5
194 Ratings

194 Ratings

batnurs67 ,

Besser als whats app

Threema ist die seriöse Alternative zu whats app, schützt die Daten, hat plausible Sicherheitsmaßnahmen, bietet ebenso wie whats app auch Sprachanrufe, hat eigtlich immer Netzverbindung.
Threema ist neben Telegram einer der wenigen Messenger der auch auf Diensthandys der österreichischen Polizei zugelassen ist und hat gegebüber Signal den Vorteil, dass die die Server nicht in den USA sind

Kosmetik21 ,

Der beste Messenger den es gibt

Der beste und sicherste Messenger auf dem markt !!! Und alle die sich aufregen IST EUCH PRIVATSPHÄRE UND DATENSCHUTZ KEINE 3,99€ WERT!?!?

Damian Lienhart ,

Wünsche an Threema

Bin von der Threema-App begeistert!

Was ich mir aber unbedingt noch wünsche:
+ Chat archivieren-Funktion sowie
+ Verteilerlisten
auch für das iPhone!!!

App Privacy

The developer, Threema GmbH, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Contact Info
  • Identifiers

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Diagnostics

Privacy practices may vary based on, for example, the features you use or your age. Learn More


  • Wallet

    Get all of your passes, tickets, cards, and more in one place.

  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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