Counters is one of the simplest Windows Phone 8 apps we've seen and if even if you don't have a need for it, you'll want to gaze over it's UX. It's designed to help you keep count of things such as days until you vacation, number of invites to a party, or anything else that can be counted or counted down.
Counters also takes advantage of our Live Tiles by letting you pin individual counters to your Start Screen for easy access. This really comes in handy if your counting down the days and need an easy reminder.
In a nutshell, Counters is a very clean, simple and straight forward Windows Phone 8 app to help you count.