Battery Doctor



Awesome tool aimed to increase running time of your device. Also it extends life-cycle of device's battery by efficient and accurate charging. 

Pros:
+ great power-saving abilities
+ works very efficient [at least on Samsung Galaxy S3]
+ excellent interface

Cons:
currently no support for gps turning off and on [hope that this problem will be eliminated soon]

Download:
https://play.google.com/store/apps/details?id=com.ijinshan.kbatterydoctor_en