This app is for people having trouble with battery management. It is only available for IOS sadly, but for those with an apple product this is the app for you! The name of the app is precisely what it does. It saves your battery not by giving you more but by telling you the amount of time the battery will last. You also can extend your battery life by disabling certain settings like Wifi, 3G, GPS, brightness of the screen and Bluetooth. The app also tells you the amount of time you have spent on different applications.
It tells you how much time to charge your phone to full battery and when to stop charging so as to extend your battery life. It can help you accelerate the speed of your phone, optimizing it to give you the best performance and gives you some app recommendations.
This app requires IOS 4.3 or later, is free and is optimized for iPhone 5.