Anyone ever heard of OpenSCAD? If you have, there's a clone called Scorch CAD on Android - I both love and hate the thing. Okay, it's awesome to be able to write 3D programs on my phone, but mother of god, why is it closed source?! I mean, surely that's a GPL violation. I'm contacting the developer. He makes no money off it anyway - why is it proprietary?! Urgh.