Phone Speed Optimizer- Killer app lets you view and remove unwanted or unnecessary processes of RAM, speed up phone, and save battery power. It is also a task manager app for Android with which you can manage all the installed apps on your phone. Phone Speed Optimizer The program shows you which processes are active, paused and running in the background. This app automatically kills the tasks every time your screen off. The app has lots of useful features like Android Optimizer, Startup Kill, Auto-Kill Processes, Regular Kill, One-Click Task Kill Widget, Quick Uninstaller etc.