I really appreciate this app, using for several years, very satisfied.
What I am missing a bit is a red-on-black color scheme - not necessarily for all screens, but at least would be usefull for the sleep tracking screen plus eventualy setting alarms + start monitoring.
Two reasons:
- red color does not disturb the eye accomodation for the dark night
- blue, white, partially also green disturb abibilty of falling asleep (reflected in apps likey Your Twilight and other similar apps)
This would be fine when joined also with true-black background for OLED displays.