3 stars: Two minor issues. 1. Sleep should be adjustable. If you wake up in the middle of the night and fall back asleep, that is your wake time. Inaccurate result. 2. The size of of font with the color selection is small when looking at times, while scrolling. Please fix and you'll have an outstanding experience
3 stars: I like the UI but this app has a lot of bugs. The sleep tracking can't handle you getting up in the night then going back to sleep again, it just records the first bit then considers you awake the rest of the night. The settings randomly reset and data goes missing. blood pressure readings don't get synced and the help screens don't scroll properly so you can't read them 100%. No autosync either. So a lot of bug fixing needed on this one.
...