Great app
I use this app every night I also use another one. This app shows a level line during light and deep sleep. The other app has like a grid showing ups and downs from awake to deep sleep. I think that is a better view of sleep. However I live this app I use both only to compare. If your looking for an app that tracks your sleep I would give this one FIVE STARS
GRIZZ52 about
Good Morning - Alarm Clock, v1.4