App must stay open to work – SpinMe Alarm Clock - Guaranteed Wake Up for Deep Sleepers Review

The app must stay open to work. You can't set the alarm and then return to your home screen or actually turn off your screen. The app will make your screen dark when you set the phone face down but the app is still open and running. The alarm will not work in the background unless your volume is on. Great, great, fantastic idea but I deleted it because I don't want to leave the app running all the time.
Review by A30685 on SpinMe Alarm Clock - Guaranteed Wake Up for Deep Sleepers.