pro version on ios

Hi,

I've been using the free version on iPhone 5s. Once I buy the paid version, is there any option to set the timer like in the pro version on Android? I mean I was able to set the time,say, for 20 mins on Android and it would shut down after 20 mins automatically. That's what I need indeed. I don't want it to play continuously as I sleep.

Thx for your help.