Dont buy it

I have an iPhone. Stay with the free version. The purchased version does nothing more. The app subtracts 2% from your actual charge, and claims the 98% to 100% is a "top off" but I dont believe it. Also, the same battery tips included in the app are available in the apple documentation, which can be downloaded for free. The best way to conserve power is to reduce apps running in the background, and reduce screen illumination. You dont need to spend $1.00 to learn that.

ScottinPhillyPA about Battery Life Magic Pro: The Battery Saver