There is sketching software, then there is 123CAD, a calculating adaptation of other sketching software.
Some examples of what I consider to be sketching software, as opposed to Computer Aided Design0 software, are Microsoft Ink, Sketchpad, Ipe, LibreOffice Draw, Photoshop, One Note, Paint, Paint 3D, and DrawPad
But 123CAD is different from these in several ways, most importantly in the ability to alter a sketch from cell data on an Excel worksheet. Scripting is the key. 123CAD saves all your work as a script behind the scenes. This allows you to link one shape to another, or to transform shapes long after the shape is created.
It fundamentally alters the way sketching can be leveraged and integrated with the familiar Excel interface.