So far pretty cool!

Information so far is interesting. I paid for the full version yet Im disappointed that you cant view the exact number of minutes in each cycle. Only gives you a percentage!! I hope in future updates it give more data points in the landscape view which you have to pay for. Id like a better description of how the app actually works to get an understanding of how accurate the data is.

Wilderness1 about Pillow: Sleep Tracker, v3.0.1