Works where so many others fail Ever since Android 4.0.4 and up, it is hard to find a screen lock app that works as advertised due to a change in Android. This app works as advertised on Jelly Bean!
Update for root users. Should work on nearly any device if given root privileges.
Supports more devices and updated to work on ICS 4.0
*Can now turn screen off through root command.
*Improved launch time.
*Fixed some minor bugs.
*Turns off the screen even faster.
*Reduces brightness to a temporary 0, and restores the original after you turn on the screen again.
*Reduced the size from 141k to 40k