YOU NEED A ROOTED DEVICE TO BE ABLE TO USE THIS APP AND THIS APP WON'T ROOT YOUR DEVICE

I am not responsible for any damage to your device that may occur use this app only if you are 100% sure what you are doing!

This app is open source on github
https://github.com/rahulkumar66/Performance-Tweaker

Performance-Tweaker is a simple app for tweaking:

CPU (Frequency Governor)
CPU Hotplug
GPU (Frequency Governor)
I/O Scheduler
Low Memory Killer
Virtual Memory
Build prop Editor
It also can monitor:

Battery or Wakelocks Stats i.e Spot rogue applications or sources which are causing battery drain(Similar to BetterBatteryStats)