I submitted an update to Apple last night that includes universal support for the iPad. I must say the game looks quite nice on the larger iPad screen, and I think you will agree when you see it!
I want to mention that I could have released a separate app, solely for the iPad (i.e. – SimplePhysics HD) and jacked the price up, but I believe that my users deserve better than that. I have received so many great ideas that I felt compelled to give you all something extra at no cost. In fact, I feel more and more like SimplePhysics is becoming a community effort. Please, if you have any ideas for the game, visit my uservoice page. Let’s build a game together