Most versatile app out there, but that’s not saying much...
The app has quite a few nice features, and allows for a tremendous amount of customization and detailed figures, however, the inability to define planes in which a particular angle exists, or planes of any kind, makes construction of irregular figures nearly impossible. The user interface is incredibly unintuitive and lacks basic features like the ability to construct a pre-defines figure, I.e. cube pyramids, even things like squares, pentagons, etc. it does have some very nice features, like the ability to save constructions and access them later without reconstruction, something no other app I’ve looked at offers. All in all, this app has tremendous potential, but it simply lacks some very basic features that any construction of 3D figures require.