Ive been using the app with ease and seeing the patterns of babys sleep is very helpful. What I dont like is that when I hit "sleep" I cant immediately write down notes about how/where I got him to sleep - you dont add notes till the sleeping ends and it creates the record of the sleep. Still, I do like it and Im glad I bought it. Babys sleep patterns have been driving me crazy and it helps to track it. I can look back and see what worked best to get him to sleep more/better.