About Threema. The Secure Messenger
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 and offers every...
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 and offers every feature one would expect from a state-of-the-art instant messenger. The app also allows you to make end-to-end encrypted voice, video, and group calls. Using the desktop app and the web client, you can also use Threema from your desktop.
PRIVACY AND ANONYMITY
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).
ROCK-SOLID ENCRYPTION
Threema end-to-end encrypts all your communication, including messages, voice and video calls, group chats, files, and even status messages. Only the intended recipient, and nobody else, can read your messages. Threema uses the trusted open source NaCl cryptography library for encryption. The encryption keys are generated and safely stored on the users’ devices to prevent backdoor access or copies.
COMPREHENSIVE FEATURES
Threema is not only an encrypted and private messenger but also versatile and feature-rich.
• Write text and send voice messages
• Make voice, video and group calls
• Share videos pictures and locations
• Send any type of file (pdf animated gif, mp3, doc, zip, etc.)
• Use the desktop app or the web client to chat from your computer
• 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)
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 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.
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.
SUPPORT / CONTACT
For questions or problems please consult our FAQs: https://threema.ch/en/faq
Previous Versions
Here you can find the changelog of Threema. The Secure Messenger since it was posted on our website on 2013-08-22 08:43:05.
The latest version is 5.2.4 and it was updated on 2024-04-22 12:58:23. See below the changes in each version.
Threema. The Secure Messenger version 5.2.3
Updated At: 2024-03-21
Changes: * Fixed a bug where unknown group members were accidentally added to the contact list
Threema. The Secure Messenger version 5.2.4
Updated At: 2024-03-21
Changes: - Added a highlighter pen function to image editor
- Support for animated WebP images
- Numerous optimizations and bug fixes
Threema. The Secure Messenger version 5.2.1
Updated At: 2023-12-15
Changes: - Fixed a crash that occurred when the app had no permission to show notifications
- Fixed an UI bug in the group details
- Added translations
Threema. The Secure Messenger version 5.2
Updated At: 2023-12-04
Changes: - New: Star messages to quickly find them again in the future (starred messages appear in “⋮ > Starred messages”)
- Option for periodic deletion of old messages after a specified amount of time (Settings > Media & Storage > Storage Management > Delete automatically)
- Improved wakeup of desktop app and web client when using Threema Push
- Improved group management
Threema. The Secure Messenger version 5.1.4
Updated At: 2023-10-25
Changes: Logging improvements
Bug fixes
Threema. The Secure Messenger version 5.1.3
Updated At: 2023-10-09
Changes: Fix stability issues on some Android 13 phones
Threema. The Secure Messenger version 5.1.2
Updated At: 2023-09-13
Changes: - Emoji 15 support
- Bug fixes
Threema. The Secure Messenger version 5.1.1
Updated At: 2023-08-28
Changes: Fixed a bug related to rotating the phone when the light/dark mode of the device and the app were set differently
Improved PFS warning messages
Fixed minor UI bugs
Threema. The Secure Messenger version 5.1
Updated At: 2023-07-31
Changes: - Refreshed UI design with support for Material You and Dynamic Colors
- Improved voice message player
- PFS enabled by default
- Various functional and performance improvements
Threema. The Secure Messenger version 5.0.6
Updated At: 2023-06-21
Changes: Fix to prevent possible database corruption on some configurations
Disclaimer
Official Google Play Link
We do not host Threema. The Secure Messenger on our servers. We did not scan it for viruses, adware, spyware or other type of malware. This app is hosted by Google and passed their terms and conditions to be listed there. We recommend caution when installing it.
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