Greenify help you identify and put bad driving applications in hibernation when you do not use them, to prevent them from delaying your device and battery leeches, in a unique way! They can do nothing without launching explicitly by you or other apps while retaining all the functionality when running at the forefront, similar to iOS apps!
Greenifying an application implies that you are aware that all the background features (service, periodic task, receiver event, alarm, update push message widget) of this application will become disabled during hibernation unless If you are using this application.
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varies with device