This ~ StereO ~ OpticS ~ App designed with the help of Android API & OpenGL for better compatibility with as much devices as possible.
( NOTE: It is NOT for VR )
It could be used for magic and meditation purposes. You need to open one of the illusions , rotate ↶ Your phone in the Landscape mode, then focus on the infinite and without the refocusing, move your view to the StereO ~ OpticS illusion. Finally you should get the illusion with 3 objects on one line.

Also, please, note that this app could only be used with the Phones. With the Tablets, the distance between two 3D objects too large, larger than the optical basis between eyes (average). And no Illusion will be present with the Tablets usage.