Timely is a beautiful, intuitive alarm clock app that kills the competition. The alarm sounds are gorgeous, the interface is simple and great-looking, but it's the features that set Timely apart. Sync your alarms between devices, and set challenges to make sure you're actually awake. The Smart Rise feature starts your alarm very softly 30 minutes before your scheduled wakeup, to try to catch you while you're at a light point in your sleep cycle. A stopwatch and timer, Daydream, DashClock and Google Now integration, widgets and a customizeable UI all make this the clock app to get.