Q Battery Doctor-Battery Life Saver is a free mobile app that can help you save battery power, improve your device's performance, and even extend its lifespan.

The main purpose of the app is to save battery power.

It also has an Energy Analyzer that can help you to save battery power more efficiently. The analyzer shows you the current consumption of the device and helps you to find out the source of the consumption.

The app can also help you to improve the performance of your device. It does that by cleaning up the device and the memory.