I don't like it
It does offer an In-App purchase. And when you purchase the full version, you will find out that: 1. It makes you pick a new song any time you enter Settings, which is very annoying. It simply doesn't keep the last song picked. Very surprising feature indeed. 2. You cannot set the snooze lag time and you cannot set a fade in volume, so the alramd always strikes in full blast. I would expect more, tehre is just too many alarm clock apps to pay for this.