Advanced Task Manager Pro 
Off functions, free memory, speed up phone, save battery, 1 pump boost phone.
The Advanced Task Manager can list all the running tasks on the phone, and it will help you stop any of the activities easily, and quickly. It is a project management tool that can manage all the installed apps on the phone.

Features
– Kill selected tasks
  • App or game killer
  • AntiVirus – Virus Scan (Trustlook Supported)
  • Android optimizer
  • Ignore apps when kill tasks
  • Auto kill tasks on every screen off
  • Regular kill
  • Startup Kill
  • One click task kill widget
  • Quick uninstaller
  • Show battery life
  • Support all android version
  • Kill GPS: Kill apps to stop GPS
  • Memory Booster, RAM Booster
  • Memory Cleaner, RAM Cleaner
  • Permission manager addon for Android 4.3 (App Ops)
  • Holo style