CPU Usage Overlay APP
This widget is a shortcut to the "Show CPU Usage" option under Settings->Developer Settings. It works by starting the same service that Developer Settings launches. As a caveat, this widget will not work on any device that does not already support showing cpu usage.
Enjoy!
Note: This is only a widget. Therefore, you will need to go to the *Widgets* section of your launcher and drag it to your home screen in order to use it.


