The app promises a lot, and delivers a little.
The main thing one expects from a sleep tracking app, is sleep tracking! The app does not output any sort of sleep analysis after waking up, nor does it add sleep analysis to the Health App.
The most talked about feature is "Heart Rate" tracking, which the Apple Watch does without needing to do anything whatsoever other than wearing it!
Very disappointed..
Zeyad AlMadani about SleepIsle