ModernUI Tuner is my latest app which I have created specially for Windows 8.1 Update 1, Spring Update, Feature Pack, whatever it is called there. It can control several secret hidden options of the "Update 1" and will make your Windows a bit tunable and flexible.

In short, with ModernUI Tuner you will be able:
  • to speed up Metro apps closing with mouse
  • to speed up Metro apps closing with touch gestures
  • to speed up the "flip to close" feature.
  • to change the Switcher (top left corner) hover timeout delay separately for Desktop and Modern apps.
  • to change the Charms bar hover timeout delay separately for Desktop and Modern apps.
  • to disable the shutdown button on the Start Screen.

ModernUI Tuner is a free, portable application. It works on Windows 8.1 Update 1 x86 and x64, no separate x64 version is required.

Download ModernUI Tuner

If you would like to see the application in action, I made a video: