It appears "various 3D animals," according to the bill each image.
Open the application and point the camera of your device on this Image
Wait 1-2 seconds and there it is
(so, if you have the following money, you can use it to see 3D animals)
USA 1 dollar
You can see much more comfortable, If you look below for the PC.
Please enter URL in the PC Browser.
Download all Marker as PDF file
Please use printed markers & point your device at this target