• This version supports iOS 17 and newer • A more modern look with redesigned screens for • Adding contacts • Creating groups • Starting a new chat • Creating and viewing polls • Previewing file messages and full-screen images • Selecting a document or contact • Scanning QR codes • Editing your profile • Linking a phone number or email address • Setting a revocation password • ID export • More reliable Threema Calls • Various under-the-hood changes • Various bug fixes and general improvements

Threema OnPrem 6.8.8o • Various bug fixes and general improvements • Starting with the upcoming major app version, iOS 15 and 16 will no longer be supported

Threema OnPrem 6.8.7o • Various bug fixes and general improvements

Threema OnPrem 6.8.6o • Fixed an issue in relation to sharing screenshots • Fixed an issue in relation to device linking • Fixed an issue in relation to storage management • Various bug fixes and general improvements

Threema OnPrem 6.8.5o • Improvements in relation to group calls

Threema OnPrem 6.8.4o • Adjusted the color scheme in the app to improve the readability of texts • Fixed a bug in relation to stickers • Various bug fixes and improvements

Threema OnPrem 6.8.3o • Fixed a bug in relation to voice messages • Added “Alarm” as a custom call sound • Various bug fixes and performance improvements Threema OnPrem 6.8.2o • Updated the logo and color scheme to reflect the new corporate design Threema OnPrem 6.8.1o • This update requires iOS 15.8 or above • Added Bulgarian localization • Fixed a bug in relation to linked contacts • Various improvements and bug fixes in relation to notifications, voice messages, individual calls, and group calls • General performance optimization

Threema OnPrem 6.8.2o • Updated the logo and color scheme to reflect the new corporate design Threema OnPrem 6.8.1o • This update requires iOS 15.8 or above • Added Bulgarian localization • Fixed a bug in relation to linked contacts • Various improvements and bug fixes in relation to notifications, voice messages, individual calls, and group calls • General performance optimization

Threema OnPrem 6.8.1o • This update requires iOS 15.8 or above • Added Bulgarian localization • Fixed a bug in relation to linked contacts • Various improvements and bug fixes in relation to notifications, voice messages, individual calls, and group calls • General performance optimization

Threema OnPrem 6.7.1o • Improved connection to the server • Fixed a bug in relation to recording and sending video messages • Fixed a bug in relation to processing incoming messages from an unknown sender • Improved file synchronization between the mobile app and Threema for desktop • General performance optimization

• New: You can now react to messages with emoji • Various other improvements and bug fixes Threema OnPrem 6.6 • Overhauled appearance of the agree/disagree icons (in preparation for the upcoming emoji reactions feature) • Various other improvements and bug fixes

• Overhauled appearance of the agree/disagree icons (in preparation for the upcoming emoji reactions feature) • Various other improvements and bug fixes

• Various improvements to the storage management • Fixed a bug where messages could not be forwarded to some contacts • Various other improvements and bug fixes Threema OnPrem 6.5 • Added Blocked Contacts list • Text formatting is now shown in the edit history • Removed Romansh language • Fixed a bug where deleted messages could still be quoted • Various other improvements and bug fixes

• Added Blocked Contacts list • Text formatting is now shown in the edit history • Removed Romansh language • Fixed a bug where deleted messages could still be quoted • Various other improvements and bug fixes

• Threema 2.0 for desktop: You can now link two computers with your mobile phone • Fixed a bug that prevented some videos recorded with iPhone 16 devices from being sent • Various other improvements and bug fixes

• Various minor improvements Threema 6.3.1 • New: Overhauled the appearance of avatars • New: Voice messages can be played back at 1.25x speed • New: Only the creator of a poll receives the poll’s status messages • New: The message to be quoted or edited is saved with drafts • Various improvements for voice messages • Various other improvements and minor bug fixes

• New: Overhauled the appearance of avatars • New: Voice messages can be played back at 1.25x speed • New: Only the creator of a poll receives the poll’s status messages • New: The message to be quoted or edited is saved with drafts • Various improvements for voice messages • Various other improvements and minor bug fixes

• Fixed a bug in relation to the group management Threema OnPrem 6.2.1o • New: Sent messages can be edited or deleted on the recipient’s end • Various improvements for group calls • Fixed various bugs that occurred when selecting and sending media • Fixed various bugs that occurred when recording and sending voice messages • Various other improvements and minor bug fixes

• New: Sent messages can be edited or deleted on the recipient’s end • Various improvements for group calls • Fixed various bugs that occurred when selecting and sending media • Fixed various bugs that occurred when recording and sending voice messages • Various other improvements and minor bug fixes

• Fixed a crash in relation to Threema Safe Threema OnPrem 6.1.1o • Improvements and various bug fixes Threema OnPrem 6.1o • New: Added in-app scanner for documents • New screen when loading work contacts for the first • SSL certificate pinning • Group call improvements • Fixed a bug that occurred when playing a GIF message • Fixed bugs in relation to PFS • Fixed a crash in relation with scanning QR codes • Various minor bug fixes

• Improvements and various bug fixes Threema OnPrem 6.1o • New: Added in-app scanner for documents • New screen when loading work contacts for the first • SSL certificate pinning • Group call improvements • Fixed a bug that occurred when playing a GIF message • Fixed bugs in relation to PFS • Fixed a crash in relation with scanning QR codes • Various minor bug fixes

• New: Added in-app scanner for documents • New screen when loading work contacts for the first • SSL certificate pinning • Group call improvements • Fixed a bug that occurred when playing a GIF message • Fixed bugs in relation to PFS • Fixed a crash in relation with scanning QR codes • Various minor bug fixes

• New: Overhauled user interface for recording voice messages • New: Voice messages that haven’t been played will be marked as such • New: Recording a voice message can be paused and continued at a later time (paused recordings will be saved as drafts) • New: Star messages to quickly find them again in the future • New: Filter message types (text messages, media captions, polls, etc.) in the global search • New: Added Swiss German and Korean localizations • Improved performance of the global search • Improved performance of the storage management • Improvements in relation to Threema Safe • Fixed a bug that could cause the text of a message not to be fully displayed • Fixed a bug that could cause the participant number of a group call not to be displayed correctly • Fixed a bug that could occur when sharing long URLs • Fixed a bug in relation to the accessibility of the chat search • Added the option to rate the Threema app to the settings • Various other bug fixes

• Fixed a bug that could cause the app to freeze after restoring a data backup Threema 5.9.2o • Improved the setup process to speed up the establishment of new Perfect Forward Secrecy sessions when restoring a data backup • Miscellaneous other bug fixes and performance improvements Threema 5.9.1o • New: Global chat search that includes media captions • Improvements in relation to Perfect Forward Secrecy • Improvements in relation to group calls • Updated WebRTC to M123 • Fixed a bug that could cause the location selection to be removed in some cases before sending • Miscellaneous other bug fixes and performance improvements

• Improved the setup process to speed up the establishment of new Perfect Forward Secrecy sessions when restoring a data backup • Miscellaneous other bug fixes and performance improvements Threema 5.9.1o • New: Global chat search that includes media captions • Improvements in relation to Perfect Forward Secrecy • Improvements in relation to group calls • Updated WebRTC to M123 • Fixed a bug that could cause the location selection to be removed in some cases before sending • Miscellaneous other bug fixes and performance improvements