Purify

Purify is an app to extend your Android’s battery life. Like other apps of its kind, Purify closes all apps running in the background. Keep in mind, though, that in the settings section, you can make a list of apps that you don’t ever want to close as the 'purifying' process takes place. Another interesting feature in Purify is that it lets you eliminate ‘bloatware’ apps included by default on your operating system. Remember that you do need root privileges to use this feature. Otherwise, you’ll only be able to delete normal apps. Purify is an app to help you improve your Android’s battery life by closing apps running the background.