Welcome once again to "WTF Apps", where I bring you yet another little app that I found when I got bored out of my mind and decided looking up stupid things on the app store was a funny idea(hint hint: It's not really that funny). Now, when it comes to electronic devices, some of the most common apps you will find are clocks, counters for events and, of course, performance related applications. "Battery Girl" is part of the third category, although it's got a bit more to it than just monitoring your device's performance.