Very Useful & Easy To Use

I have chronic pain, and knowing how it affects my sleep is an important factor in adjusting my treatment. This app gives me a nice picture of my sleep pattern. When my doctor asks how often my pain wakes me up at night, I can show him.

I also enjoy the soft wake up keyed to the sleep cycle.

I would have given it a five except that, as a physician & scientist, Id like to see a study comparing it to sleep lab studies to be sure its accurate.

IT_History about Sleep Cycle - Tracker & Sounds, v5.2.1