This battery booster/saver app will run in the background and automatically disable battery-sucking features of your phone when you aren't using them. For example, this app will disable Bluetooth when you are not using it. Other features include: live wallpaper (if set), wifi, 3G, 4G, bright screen, and network Services.
If your phone is rooted, this battery saving app will also undervolt your CPU when you are not using it.
Disclaimer: This app is a pure placebo. It does not actually boost your battery life. It is a prank app which you can use to trick your friends. Have fun!