Interval is an alarm, timer and stopwatch application with some advanced features. Choose to create alarms based on your natural sleep cycles, leaving you feeling alert and refreshed in the morning. Pick from a range of alarm sounds including birdsong and water effects. All alarms come with a note that lets you know how long until they next go off. This is also displayed in the night-time clock view, letting you know exactly how much more sleep you have left! Interval also includes a countdown timer with sound and vibration alerts, as well as a stopwatch with lap functionality. The application integrates with your phones chosen theme and comes with configurable settings including lock screen timeout for the night-time clock view and countdown timer sound effects. Interval comes with a live tile giving you information on when your next alarms are due. Free version comes without the ability to change background or button settings, pin timer, pin pre-set timers, pin stopwatch or localized language support.