This seems to work

I have been using this for a week, I do feel as though I am waking well (despite having a busy week & it telling me last night that I have a 10hour deficit this week) it works well, only think I would like to do for an improvement is to set the alarm & something pop up & tell me I will need to go to sleep now to get 8 hours sleep & a reminder an hour earlier to tell me to stop reading the news etc.

Letsgiveupnow about Sleepzy - Sleep Cycle Tracker, v1.3