Some feedback on the Android app:
The ability to show and hide notes on tasks is extremely lacking. First off it is buried in the … menu. It really should be its own action button.
But the biggest problem is that it has no persistence. In the desktop app you can show and hide notes per task and that is remembered from one session to another. If I hide notes, which is for the entire list, I can just rotate the screen and it defaults back to showing all the notes. It should persist for as long as the application is still loaded or maybe save it as a shared preference.
Speaking of the … menu it also has Settings and add pro key. Those probably really belong at the bottom of the pull out drawer.
One other nitpick in the tag editor, if you edit the name of a tag such that it should be in a different position in the sorted list, it doesn’t move to its new sorted position unless you exit the tag list and re-open it.