FEATURES:

View options include positive coordinate axes, color-coded vertices, transparent colored sides.
Stereoscopic view or single image view.
Ability to rotate the object in both 4d and 3d using motion sensors (gyroscope enabled devices only) and touch screen.

INSTRUCTIONS:

For devices without a gyroscope, the default operation is to use the left half of the touch screen to rotate in three dimensions and the right half to rotate in four dimensions.
-swipe up or down on the left side to rotate the object in the ZY plane.
-swipe left to right on the left side to rotate the object in the ZX plane.
-swipe up or down on the right side to rotate the object in the WY plane.
-swipe left to right on the right side to rotate the object in the WX plane.

If the device is equipped with a gyroscope, uncheck the lock motion checkboxes to use the device motion to rotate in 3d. In this mode the entire touchscreen is used to rotate in 4d.