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Highly secure communication for businesses. Data protection, productivity, and compliance – without compromising usability.

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Privacy without compromise. Communicate with friends and family in complete confidentiality – no data snooping, no metadata collection, no compromises.

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Since 2012, we have been developing the Threema app in Switzerland, giving individuals, companies, and public authorities control over their data and ensuring uncompromising privacy protection.

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“Privacy by Design” means that we view data protection not just as a legal requirement, but as a guiding principle for our products and services.

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Threema protects confidential information, avoids metadata, and is GDPR-compliant – “Security by Design” is our philosophy.

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Threema Work Threema Broadcast Threema Gateway

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Changelog

All
Android
iOS
Desktop
Desktop 2.0
Web
Management Cockpit
Broadcast
Gateway

All

Threema Private

Threema Work

Fixed a bug that could occur when updating the app

Fixed a crash that could occur when launching the app
Fixed a possible issue during the setup of the app

Note: This version requires iOS 18 or higher
Improvements in relation to notifications of group calls
Improvements in relation to calls
Improvements in relation to voice messages
Various performance improvements
Various improvements for devices running iOS 27

Fixed a crash that could occur when launching the app

Various improvements in relation to Threema calls

Various improvements in relation to Threema Work calls

Fixed a bug related to automatic file downloads
Improvements to contact synchronization
Various improvements and bug fixes

Added an alphabetical index scroller to the contact list when starting a new chat
Added swipe actions for search results in the contact list
Improved audio controls in calls, voice messages, and media playback
Improved Threema calls and features related to Threema Work 2.0 for desktop
Fixed a bug that caused a warning about multiple connections to be shown incorrectly
Fixed a bug that prevented the typing indicator from disappearing
Fixed various bugs and crashes in relation to calls
Other improvements and various bug fixes
Note: Starting with the next major app version, iOS 17 will no longer be supported

Fixed a bug related to automatic file downloads
Improvements to contact synchronization
Various improvements and bug fixes

Added token-based app activation links with expiration
Removed the option to select password formats; passwords are now hashed by default
The hash option for credentials API endpoints will be removed in a future release
General performance improvements and bug fixes

Added an alphabetical index scroller to the contact list when starting a new chat
Added swipe actions for search results in the contact list
Improved audio controls in calls, voice messages, and media playback
Improved Threema calls and features related to Threema 2.0 for desktop
Fixed a bug that caused a warning about multiple connections to be shown incorrectly
Fixed a bug that prevented the typing indicator from disappearing
Fixed various bugs and crashes in relation to calls
Other improvements and various bug fixes
Note: Starting with the next major app version, iOS 17 will no longer be supported

Redesigned the Statistics page in the management cockpit
General performance improvements and bug fixes

Redesigned the Broadcast page in the management cockpit
General performance improvements and bug fixes

New features:

Prevent screenshots and Windows Recall from recording app content

Improvements:

Messages can now be forwarded within the same conversation

Fixes:

Fixed a bug that prevented the app from updating itself

…and various under-the-hood changes and improvements

New features:

Prevent screenshots and Windows Recall from recording app content

Improvements:

Messages can now be forwarded within the same conversation

Fixes:

Fixed a bug that prevented the app from updating itself

…and various under-the-hood changes and improvements

Improvements:

Context menus can be opened in text field to access OS-level features
Additional media can be pasted in the media sharing dialog
Performance improvements for large message databases

Fixes:

Fixed a bug where message edits could be applied on the secondary device even if the change was sent by a group member other than the author of the original message
Fixed a bug related to the “block unknown” option
Fixed a bug that, under certain circumstances, allowed multiple choices in single-choice polls

…and various under-the-hood changes and improvements