Magic Cube 4D

MC4D is a true analog of Rubik's Cube in four dimensions. Tap a hyper-face to rotate that face to the center. Use the buttons to scramble 1, 2, or 3 random twists and then try to undo those twists back to the solved state. Or hit the "Solve" menu item and watch the app do it. Good practice while you are out and about.