This app doesn't work for me. I have my "green area" set perfect, so when I am using the phone in portrait or landscape, its set to where it's in the "in use" area. But if I lay my phone flat (out of the green area) then my display NEVER goes dark. Am I doing something wrong? Did I miss something in the video?
Check the "stillness" timeout and sensitivity settings. Even when it's out of the "green" area it still follows these two setting to confirm screen-off. Also make sure you have the "enable at startup" checked. It seems to work better when started by the system after a boot than manually started.
Also if you've been using the debugging setting make sure you don't have "always on" checked (or whatever it's called, can't remember but it's on the same screen as the "usb debbuging" setting.
Slevinn--
If correctly I understand the theory behind this app, this is the way it is supposed to work for the vast majority of intended users and you can customize out of it if you want the screen on while the device is on a flat surface. The whole idea of the app is to guess whether the user wants the screen on or off based on the device's deviation from horizontal. As a default, the developer has guessed that most people are going to pick it up and tilt it when they want to look at info on the screen, and that they are going set the device down on a flat surface when they are done looking at it -- at which point they would probably prefer to have the screen off to save power. I am sure you can change this behavior in the settings but I haven't bothered to.