I needed an app to help me shut down items that would end up draining my battery or slow down other task I wanted to perform. I would run apps not realizing that they were running in the background after I pt the device away till I needed it again. I tried other apps but wasn't happy with them. I like the UI. Advanced Task Killer is the cream of the crop. This creative app allows you to easily see what applications are currently running and offers the ability to stop them fast and easy, thus freeing up valuable memory for other task and saving on battery life.