When it comes to an app's usability and user experience, small changes can make a big difference. At first sight, you might not notice all adjustments we made in the current version (2.4.3) for iOS.
The most obvious changes concern groups: The process of creating a group has been simplified and is now much more intuitive. Group management has been generally improved, now you can see all your groups at a glance as they are listed separately in the contact list.
This update also contains design enhancements. For example, the chat list and contact's detail view have been revised. Threema provides a new option to disable push notifications per contact. Many other improvements are waiting to be discovered.
Read the full release notes here.