Simple Task Killer allows user to safely end running applications. According to Android phenomena free memory is wasted memory. The fact that you can see an application’s process “running” does not mean the application is running or doing anything. It may simply be there because Android needed it at some point, and has decided that it would be best to keep it around in case it needs it again. So Simple Task Killer is designed to keep it in mind and allows user to avoid killing applications preloaded in your Android. Simple Task Killer is ad free software so advertising offers doesn't drain your battery.