Greenify is an Android app that can improve your device's battery life and performance by hibernating certain apps. Developed by Oasis Feng
License: Free
Greenify excels in prolonging battery life through app hibernation, especially for rooted devices, while SD Maid offers a more robust solution for system cleaning and optimization without the need for root access. Users looking for battery savings should prefer Greenify, whereas those needing comprehensive system maintenance will find SD Maid more suitable.