[Q] Windows 8 on Android Tablets/Smartphones topic

I was travelling the youtube and i saw a video where you can actually install windows 8 on your android device.
It's an app that installs the windows via the usb which must be connected to the device.
The app it's called Change My Software 8 Edition
The big question is : Is it real or is it Fake ?
Also if it's real, can you actually run .exe files like windows do ?
Or is it just an emulator ?

Or what is it then ?