Battery Saver - Battery Doctor Pro is a free battery-saving app. It helps you save your mobile device's lifeline so that you can utilize it for much longer.

This app uses a cleaning function to make your device's system much healthier.

It also includes a diagnostic function, which can locate battery-draining apps, so that you can stop each of these, maybe even remove them, and thus help you to save phone power.

If your device is heating up too much, it will also notify you about the problem. You will be able to find out the reason for the heating and therefore solve it in time.

The app features some sort of vacuum that scoops up all the junk and cache files so that you have a cleaner mobile landscape.  This should help improve mobile performance.

It can also help you to keep your device's internal functionality in a safe way