When comparing Pixel OFF Save Battery AMOLED vs Greenify (Donation Package), the Slant community recommends Greenify (Donation Package) for most people. In the question“What is the best app to help conserve Android battery life?” Greenify (Donation Package) is ranked 1st while Pixel OFF Save Battery AMOLED is ranked 5th. The most important reason people chose Greenify (Donation Package) is:
Greenify's mane function is to hibernate any installed apps. This allows users to to quell overly active apps that are draining their battery without having to delete them. This can be done with or without ROOT.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Adjustable agressiveness
There are 5 levels to choose from - Mesh 1 is the lowest setting, and Mesh 5 is the most aggressive. You can choose which level to run at to best compromise between battery life and picture quality.
Pro Reduces power needed by the display
Pixel OFF basically overlays a black grid over the existing picture to prevent some pixels from lighting up at all. This reduces the overall power draw from the display
Pro Hibernate overly active apps to save battery
Greenify's mane function is to hibernate any installed apps. This allows users to to quell overly active apps that are draining their battery without having to delete them. This can be done with or without ROOT.
Pro Even works without ROOT
Greenify even offers battery savings to non ROOT devices, though it may be limited compared to what can be done with ROOT and Xposed.
Pro Has extra experimental features over the free version
The Greenify (Donation Package) has a few extra experimental features that the free version does not offer. They require ROOT and the Xposed module to be installed. Using these features can help with the compatibility of the rest of the Greenify app, which is a big plus.
Cons
Con Reduces picture quality
Because it overlays a very thin black grid, it is effectively reducing the resolution of the display...however the pixels won't be spaced out properly (for example instead of having 8 pixels evenly spread out, now you could have 4 regular pixels followed by a black pixel, followed by 4 more pixels and another black pixel. This will distort the image.
Con Greenifying without ROOT has to be done manually each time
When using Greenify without ROOT access to hibernate apps, it has to be done manually each time. There is a widget and shortcut that users can set to their home screen to make this action a bit easier though.
