Has anyone used one of these apps, it appears it can do more then a sleepy as well, basically one wear a bracelet that is later hooked into your iphone etc and can show u the info recorded. I believe the bracelet takes into accounts one movements and correlates it with certain sleep patterns, they say they arent as good as a commercial sleep lab but read where one guy compared his app with a sleep study and there wasnt alot of difference. I think this would be interesting to see what sort of deep sleep we get and even an alarm that will wake u when not in deep sleep so u dont wake tired. Also a feature is like a pedometer, this could help us pace better. I believe these apps are free to cheap but the bracelets are 100 to 150 bucks.