The WBS 3D Curves app animates three-dimensional curves such as a Viviani's curve, a spherical nephroid, and a trefoil knot. A user can control the parameters of the curve: the animation's speed, the curve's length, and its texture as well as an object the composite curve is made of. It is also possible to change the current zooming scale and the point of view using a mouse (on PC) or fingers (on touch-enabled devices).