http://play.google.com/store/apps/details?id=com.bigeyes0x0.trickstermod

* Donate key will get you following features:
- I/O scheduler advanced control
- Color profile for device with color settings
- CPU Frequency profile
- Voltage profile for some settings
- Sound control for faux's patches
- Advanced gamma control for N4 with faux's patch
- Touch Filter Control for N4 with supported kernels
- Bootloader lock/unlock without fastboot and data wipe for some devices
- Kernel backup/restore on some supported devices
- Launcher shortcuts to some app operations

Note:
- Set on boot delay, Frequency Lock and Apply Grace Period (was bootloop preventer) are now available in the free app.