The App is pretty stupid, and it needs one. It does Sleep well. It does not always sound the alarm - which is not good. You cannot rely on the Phillips alarm app, which also does not do internet radio as advertised, and the touch zones for the app "buttons" are tiny and you have to use the very, very, very, tip of your finger to use this stinky app. They have not updated the app in a looong time either. I would steer away. Better sound can be found elsewhere too. Minimal documentation with purchase rounds out the utter disappointment in this deal.