Source on GitHub
Testing and Issues
You can test this app and submit issues during the testing period of the Android Contest 2021 contest.
Entries with serious issues will not be able to win the contest, but even minor issues might be important for overall results.
2. Added "Mark as Read" option for folders
3. Added "Share Link" option
4. Added input format-restriction for username
5. Added close button for MiniControlsView in PipVideoView
6. Private Group mention removed from mentions list
2) Works in "All Chats" folder and only for included chats in other folders (doesn't mark as read categories)
3) Works, also for mails.
4) Works but no animation, no haptic feedback and spaces are not replaced by "_".
Doesn't work when setting username of a public group/channel.
6) Fixed but only for basic groups.
Mention still present on private supergroups.