I expected this App that I could look at various polyhedra from various angles. And yes, it is! It is also useful. But there is one request. Perspective seems to be given too much to the figures; for example, in the case of a cube viewed from above, the size of upper surface is so larger than that of lower surface, that the view seems different from the reality.(Although if it is a giant cube, it may be ok...) So I ask the developper to make the degree of perspective changeable, please! This point is important to think how structures can be seen in real, I think.