Threema. The Secure Messenger6.5.3
Publisher Description
Threema is the messenger with the most consistent focus on security and privacy.
Threema is the world’s best-selling secure messenger, used by more than 12 million people in over 175 countries, developed in Switzerland, and designed with privacy and data protection in mind. Whether chats, calls, or files, everything is end-to-end encrypted, and no data trail is left behind. Instead of a phone number or email address, a randomly generated Threema ID serves as a unique identifier – anonymous and secure. Threema protects what really matters: your privacy.
Advantages of Threema:
· Text and voice messages, including emoji reactions
· End-to-end encrypted voice, video, and group calls
· Location sharing
· Sending files in all formats (PDF, GIF, MP3, ZIP, and more)
· Ability to edit sent messages and delete them for chat partners
· Desktop app and web client for convenient chatting on your PC
· Group creation and polls
· Light or dark mode
· No ads, no trackers, no data collection
· Identity verification of contacts by scanning their QR code
Reliable security:
· Open source and regular audits
· Servers in Switzerland
· Anonymous use possible: no phone number or email address required
· Messages are deleted from the server immediately after delivery
Do you have any questions or problems? Our FAQ can help: https://threema.com/support
Enjoy using Threema!
Threema is the world’s best-selling secure messenger, used by more than 12 million people in over 175 countries, developed in Switzerland, and designed with privacy and data protection in mind. Whether chats, calls, or files, everything is end-to-end encrypted, and no data trail is left behind. Instead of a phone number or email address, a randomly generated Threema ID serves as a unique identifier – anonymous and secure. Threema protects what really matters: your privacy.
Advantages of Threema:
· Text and voice messages, including emoji reactions
· End-to-end encrypted voice, video, and group calls
· Location sharing
· Sending files in all formats (PDF, GIF, MP3, ZIP, and more)
· Ability to edit sent messages and delete them for chat partners
· Desktop app and web client for convenient chatting on your PC
· Group creation and polls
· Light or dark mode
· No ads, no trackers, no data collection
· Identity verification of contacts by scanning their QR code
Reliable security:
· Open source and regular audits
· Servers in Switzerland
· Anonymous use possible: no phone number or email address required
· Messages are deleted from the server immediately after delivery
Do you have any questions or problems? Our FAQ can help: https://threema.com/support
Enjoy using Threema!
About Threema. The Secure Messenger
The company that develops Threema. The Secure Messenger is Threema AG. The latest version released by its developer is 6.5.3. This app was rated by 9 users of our site and has an average rating of 3.8.
To install Threema. The Secure Messenger on your Android device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2026-09-22 and was downloaded 4,575 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the Threema. The Secure Messenger as malware if the download link to ch.threema.app is broken.
How to install Threema. The Secure Messenger on your Android device:
- Click on the Continue To App button on our website. This will redirect you to Google Play.
- Once the Threema. The Secure Messenger is shown in the Google Play listing of your Android device, you can start its download and installation. Tap on the Install button located below the search bar and to the right of the app icon.
- A pop-up window with the permissions required by Threema. The Secure Messenger will be shown. Click on Accept to continue the process.
- Threema. The Secure Messenger will be downloaded onto your device, displaying a progress. Once the download completes, the installation will start and you'll get a notification after the installation is finished.
Program Details
System requirements
Download information
Pricing
Version History
version 6.5.3
posted on 2026-09-22
- Fixed a bug related to automatic file downloads
- Improvements to contact synchronization
- Various improvements and bug fixes
version 6.5.3
posted on 2026-09-22
- Fixed a bug related to automatic file downloads
- Improvements to contact synchronization
- Various improvements and bug fixes
version 6.5.2
posted on 2026-09-22
- Fixed a bug that occurred when rotating the smartphone while using Threema’s camera
- Various improvements and bug fixes
version 6.5.1
posted on 2026-08-24
- Support for emoji version 17.0
- Various improvements and bug fixes
version 6.4.3
posted on 2026-07-29
- Various under-the-hood improvements and bug fixes
version 6.3.2
posted on 2026-03-26
- Play a sound when establishing Threema calls in individual chats
- Use the default path for data backups if the system’s picker does not work
version 6.3.1
posted on 2026-02-02
- New: Recommend Threema Work and earn a referral bonus!
- Emoji reactions can now be read by TalkBack
- Fixed a bug in relation to ringtones for Threema calls
- Fixed a bug that could occur when the app lock is used
version 6.3.0
posted on 2026-02-02
- Fixed a bug in relation to access of stored files
- Message drafts are saved while typing
- Various improvements and bug fixes
version 6.2.1
posted on 2025-11-26
- Fixed a bug that could occur when using home screen shortcuts
- Fixed a bug that could cause the app to crash when opening the archive
- Various UI improvements and small bug fixes
version 6.1.3
posted on 2025-10-16
- Fixed a bug with the mapping of 👍/👎 emoji reactions to the legacy “agree”/“disagree” reactions
