I think it's by far one of the best apps out there. It integrates well with the default calendar app, and really helps you to track your day. Tons of customizable buttons, and even the clock face itself from the hour/minute arms colour and thickness/length, to the placement of the numbers on the clockface. I love how it displays the time remaining to your next meeting, task or alarm. Widget is pretty good and you have full functionality from the comfort of your home screen. Lock Screen display??