Have you ever had problem visualizing the fourth dimension? I have found this app - The Fourth Dimensional App - which helps you visualize the tesseract. (A tesseract is the four dimensional analog of a cube.)
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.
This amazing app is free for a limited time. Download it now! Visit http://fourthdimensionapp.com
Note: It is only available for iOS devices.