Greenify is one of the reasons why rooting your phone can save so much battery life. Greenify can boost battery life by an average of 2-4 hours simply by intelligently managing how apps run in the background.
Available on both rooted and non-rooted devices, Greenify is one of the world’s most popular rooted apps. It works much better when installed on a rooted device.
No matter which device you install it on, Greenify will hibernate background apps. When an app hibernates, it stops running in the background. It won’t deliver notifications to your phone and it won’t silently steal RAM or CPU cycles. To activate this app again, all you have to do is tap on it – just like you normally would when opening the app.