Definitely fake.

Ok, first of all, in the description it says the game is fake, (not in those words though) and I have 100% proof, I was in a car, moving at 60mph and a ghost popped up, It moved with the camera, and showed with the case over the lens. All those people saying its real are total imbeciles.

M3G4D about Ghost Observer - AR Detector, v1.4