You loved playing with tracing paper when you were in school, but then you grew up, and now you can't exactly carry a roll of paper around in your Prada messenger bag. People on the subway would just not approve. You do however carry an iPad and that is why genius tracing app Morpholio happened. Originally designed for architects to display their ideas on the fly, the app spread to a wider creative group. Morpholio is the perfect addition for those of you who walk around the city, see buildings and think, "yeah, I could do better."