Solid physics hindered by lack of tools

First off, I received this for free for a free app a day. The physics in this heads and shoulders above similiar programs I have come across on the app store. That said, the tools are somewhat lacking as far as adding in drawings. I feel like I would have to put an inordinate amount of time to create an object that I would feel would somewhat accurately represent the real world equivalent. For free, this is a great time waster that also has some great effects.

Trent Cole about Wind Tunnel Free