Duration of sleep only

I tried this app for two weeks before giving up on it. Every time I got less than 6 hours of sleep it said poor sleep quality and every time I got around 8 it says "great!". The purpose was to monitor how I slept and not the duration of the sleep. I was in light sleep for all night one night but since it was longer than 8 hours that I was down then the app said I got great sleep. Which I knew to be false because I felt like crap after having been awake in the middle of the night.

Foley3871 about Sleepzy - Sleep Cycle Tracker