SyCoREAPER
Retired Forum Moderator
I believe with Greenify you can hibernate apps while the screen is on (aka phone is in use), but Power Nap only "hibernates" when the screen is off. So depending on what you use it for, you can either get rid of Greenify or keep it. But even if you use it alongside each other, it shouldn't have any ill effects.
Greenify Hibernates when the screen is off as well. I just want to clarify before I try and I am sure others will ask as well.