At first glance, A-Shape seems like an app designed to go over the heads of most users. The opening screen discusses X and Y coordinates and the intricacies of geometry. However, after a few moments spent playing with the app, you'll find that it offers a unique experience even for those that aren't mathematicians, or even mathematically inclined.
The goal of A-Shape is to give you complete control over the dimensions and intricacies of a shape with affine transformation. If this means nothing to you, that's okay -- the shapes you create are incredible and can be tweaked and adjusted with translation, scaling, and rotation of the object's coordinates. Again, how this actually works is unimportant, because the interface is set up in a way that makes it very easy to change all of these things without knowing what they are. After you create each shape, you can save it to your favorites, play it back to see the shape generated, or share it with a friend.
A-Shape is a very easy-to-use app with a clean interface and minimal options. It doesn't provide much in the way of function for these shapes once they are created, however. It is more of an artistic piece, allowing you to create and appreciate the shapes that can occur naturally using geometry. While A-Shape may prove more of an interest for those that understand the math behind it, it is still something of a curiosity for other users; and because it is free, there is no reason not to enjoy it.