I'm on it! 5 stars coming up.
I must say I very happy you offered all the tools, except for export, for free. It took me a while to like the app, but that's just because I was using it wrong. Once I understood your take on 3D it became very simple and powerful enough. I am now a subscriber. ( the 99 price also helped, 250 was a bit steep!)
Do you guys at least detect the iPad and warn users? Apple should really let you be iPad Pro only.