iOS: We're fans of the Wake N Shake alarm clock because it really forces you to get up and out of bed by making your vigorously shake your phone before the alarm turns off. If you've wanted to give this evil wakeup call a try, you've always had to drop a couple of dollars, but for the next few days the app is free.
The sale is to celebrate a host of new features, including a complete redesign that makes Wake N Shake easier to use as a whole. Of course, the basic premise of the app, that you have to shake your phone vigorously before the alarm turns off, remains the same. Wake N Shake is certainly one of the more sadistic apps out there, but if you struggle to get up in the morning it's worth grabbing now while it's free.
Wake N Shake Alarm Clock [iTunes App Store]