No-nonsense app that only serves one purpose: prevent the screen from turning off while on external power
That's it. But extremely useful when you have a device that hasn't this option in the settings (like for example the Samsung Galaxy S3 or Galaxy Note 10.1).
Warning: No fancy toggles, no moving images, no awesome animations, no widgets .. just a boring utility. :-)
Technical info (in case you are interested in it): the app starts a service when the ACTION_POWER_CONNECTED intent is triggered. When the service is started a WakeLock object is created and acquired. When the power is unplugged and a ACTION_POWER_DISCONNECTED intent is triggered, the service will be stopped and the WakeLock object will be released.
Battery life isn't affected.