If you clearly know the whole process of an object's motion change and want to show it off, or if you're uncertain and just want to find a place to demonstrate it, aniBoom is actually a pretty good choice. It provides you with some basic shapes, allowing you to freely design familiar objects and observe their motion and deformation. Of course, these deformations are pre-designed by you. If you work in a related field, aniBoom might be somewhat helpful to you. If you're a layman, you can treat it as entertainment. Watch the operation example video.