So Ive had the paid version of the app for over a month now and I use it everyday. It provides good insight for the noises I make throughout the night and all the tossing and turning that I do. My only problem is the suggested times I should be going to bed. I work third shift on the weekends and average 3-4 hours of sleep on those days. It doesnt really account for you weekday hours and weekend hours being different. Im sure i am a rare case with hours like that but if your slee schedule is changing then dont expect this app to help you determine how to sleep better. Itll help you figure out the quality of sleep you are getting but thats it. It has given me good information about my sleep throughout the night and had given me an ability to try to improve my nights sleep.
Seadweller43 about Pillow: Sleep Tracker, v3.0.4