This app was very good at first other than the sync issue. I used it nightly for about two weeks and probably got 12 readings. Today is Tuesday and I have not been able to get a reading since Friday (it does nothing after I hit wake, but show Fridays). I once again uninstalled the app and reinstalled it today, and hoping it will work tonight. I think its the best Apple Watch sleep tracker, But the issues with the sync and just not reading at all some nights makes it not worth it at the present time
Rickyprosnit about Sleep Tracker - Sleep Pulse 3