![[iOS] Free "The Fourth Dimension " (Educational App) $0 @ iTunes](https://files.cheapies.nz/n/28/11828.jpg?h=0c15b4c7)
The Fourth Dimension is a 30-page interactive book that explains a single mathematical idea in language that anyone can understand. Instead of static images or canned videos, this app employs a unique 3D touch interface that lets you literally grasp the concept of the fourth dimension with your own hands.
