Finally, done it, the initial release, after months of work.

This project began when I tried to make a pottery model in paper, as a toy. Then I found making a 3D Unfold app is great not only for CAD users, but also for myself to perfect my geometry and polyline programming system.

You can see the product page here: 7cad 3D Unfold

It will be a free app. While waiting for the Autodesk Store to review it, contact me if you want to try it out first.