3 ms·POP - Prototyping on Paper | iPhone App Prototyping Made Easy3 points by florian95 13y agoanip 13y agohttps://news.ycombinator.com/item?id=4789281 https://news.ycombinator.com/item?id=4789281florian95 13y agoSorry... Why HackerNews doesn't merge that ?