Greenify is an Android utility for hibernating apps that may continue running in the background when you are not using them. Its purpose is to help limit background activity that can consume battery or affect device performance.
What does Greenify do to apps?
The app identifies apps described as misbehaving and places them into hibernation while they are not in use. According to the supplied description, a hibernated app cannot run in the background unless you launch it. The goal is to limit background activity rather than remove the app: Greenify says apps retain their functionality when opened and used in the foreground.
Can it help with battery use and performance?
Greenify is intended to reduce battery consumption from apps that remain active when they are not being used. The source also presents hibernation as a way to address slowdowns associated with background-running apps. These are the app's stated purposes, not a guarantee of a particular improvement on every device or with every app.
Does Greenify require root access?
The supplied feature information states that battery saving is available on Android 6 and later without root access. It does not specify requirements for other Android versions or describe whether every function has the same access requirements, so those details should not be inferred from this statement.
Which apps might need special consideration?
Apps that depend on continuous background activity may be affected by hibernation. The source specifically cautions about alarm clocks and instant messaging apps, and notes that some apps may not work as expected or may stop receiving push notifications after being greenified. Consider whether an app needs to perform those tasks before hibernating it.
What is stated about resource use?
The supplied description characterizes Greenify itself as having a light resource footprint, reporting average RAM use below 5 MB and minimal CPU and battery consumption. This figure is a claim in the app description, not an independently verified result or a measurement for a particular device.