Tesseract Trainer generates a full screen real time display of a rotating tesseract - the equivalent of the cube in 4 dimensions. This app also adds point textures, which give you a feel of what each of the eight faces are doing. There's a stereoscopic option which adds 3D depth to the projection from 4D, music and numerous options to play with. I'm very keen to get feedback as to whether anyone can 'see' the 4D effect here.
The application contains a number of unique features. Point textures convey the orientation of each of the faces as the hypercube rotates. The two invariant planes of the rotation are shown. Any number of faces can be drawn, so each can be followed in turn. The facets of each face can be textured, and faces on each axis are shown in different colours to distinguish them. A manual is provided in PDF format, together with key control help whilst the application is running. Display resolution can be selected to match the display. Finally, some experimental seven-time music creates a bit of atmosphere.