Threema IPA

Threema secure messaging app

Threema is the world's best selling secure messaging app, keeping your data out of the hands of hackers, companies and governments.  This service can be used completely anonymously.  Threema is open source, enables end-to-end encrypted voice and video calling, and offers all the features one would expect from a state-of-the-art instant messaging app.  With Threema Web, you can also use Threema from your Desktop.

 
 PRIVACY AND ANonymity
 Threema was designed from the start to generate as little data as possible on servers.  Group memberships and contact lists are only managed on your device and are never stored on our servers.  Messages are deleted immediately after delivery.  Local files are stored encrypted on your mobile phone or tablet.  All of these effectively prevent the collection and misuse of your personal information, including metadata.  Threema is fully compliant with the European privacy regulation (GDPR).
 
 
 HIGHEST ENCRYPTION POWER
 Threema encrypts all your end-to-end communications, including messages, voice and video calls, group chats, files and even status messages.  Only the intended recipient can read your messages, no one else can.  Threema uses the trusted open source NaCl cryptography library for encryption.  Encryption keys are generated and securely stored on users' devices to prevent backdoor access or copying.
 
 EXTENSIVE FEATURES
 Threema is not just an encrypted private messaging application, it is a versatile and feature-rich application.
 
 • Write a text message and send voice messages
 • Make audio and video calls
 • Share videos, images and locations
 • Send any type of file (pdf, animated gif, mp3, doc, zip, etc.)
 • Use Threema Web to chat from your desktop
 • Create groups
 • Organize surveys with the survey feature
 • Choose between dark and light themes