Hi fellow GR designers, I just wanted to share a quick tip. When working on a touch/app interface or something of that sort, I use maxivista to broadcast clone of working window to an iPad. This gives a representation of a real size of controls, knobs and other GUI elements. Because iPad ppi is higher than that of computer screen, sometimes you would draw those items smaller than they should be. But with maxivista you can preview your design in realtime on actual tablet screen and thus save time on later adjustments. Hope that helps.