I share my experience with WHAFF battery application. When I install in my android phone for making save the battery life to longer time. When I using it I found that battery cannot be save only it discharged very fastly because my battery status is 56% when I again check my phone in 7 min later then 44% battery left.
I uninstalled this application because it is wastage of battery. This application graphics and animation is good but performance very bad.
So my experience with my personal opinion that don’t install this application if you want to save your battery life then off unnecessary background application which saves a real battery energy.