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 characteristic one would expect from a country-of-the-art instant messenger. With Threema Web, yous can too utilise Threema from your Desktop.

Privacy and Anonymity

Threema is designed from the basis upward to generate as piddling data on servers every bit possible. Group memberships and contact lists are managed on your device just and never stored on our servers. Messages are immediately deleted afterwards they accept been delivered. Local files are stored encrypted on your mobile phone or tablet. All this effectively prevents the drove and misuse of your personal information, including metadata. Threema is fully compliant with the European privacy legislation (GDPR).

Highest Encryption Strength

Threema end-to-end encrypts all your communication including messages, vocalism and video calls, group chats, files and even status messages. But the intended recipient, and nobody else, can read your letters. Threema uses the trusted open source NaCl cryptography library for encryption. The encryption keys are generated and safely stored on users' devices to foreclose backdoor access or copies.

Features:

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

  • Write text and send phonation messages
  • Make voice and video calls
  • Share videos pictures and locations
  • Ship whatsoever type of file (pdf blithe gif, mp3, doc, zip, etc.)
  • Employ Threema Web to chat from your Desktop
  • Create groups
  • Conduct polls with the poll characteristic
  • Cull between a night and a light theme
  • Apace and silently reply with the unique hold/disagree feature
  • Verify the identity of a contact by scanning their personal QR lawmaking
  • Use Threema as anonymous instant messaging tool
  • Synchronize your contacts (optional)

Servers in Switzerland

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

Full Anonymity

Each Threema user receives a random Threema ID for identification. A phone number or electronic mail accost is not required to utilize Threema. This unique feature allows you to use Threema completely anonymously – no need to surrender individual data or to open an account.

Open Source and Audits

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.

No Ads, No Trackers

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

What'southward New:

  • Video call stability improvements
  • Improved call screen usability
  • Issues fixes