Battery Monitor: Keep track of battery stats such as screen on time and idle drain
CPU Times: Show frequency usage and deep sleep, sort by frequency or usage
Update or Install ElementalX Kernel on Nexus 5, Nexus 6, Nexus 7 (2013), Nexus 9, HTC One m7, HTC One m8 and HTC One m9.
Kernel Backup (on Nexus devices): save and restore kernel backups
CPU Settings: Max freq, min freq, governor, CPU boost, hotplugging, thermal control
Voltage control (requires kernel support)
Graphics Settings: Max freq, min freq, governor
Color Control (requires kernel support): RGB controls, saturation, value, contrast and hue, save and apply custom profiles.
Gesture Options (on supported devices): sweep2wake, doubletap2wake, sweep2sleep, haptic feedback, camera button, wake timeout and more
Sound Control (requires kernel support)
Misc Settings: i/o scheduler, readahead, fsync, USB fastcharge, TCP congestion algorithm, last kernel log, magnetic cover control and more!