Looks interesting and will take a look into it. I saw it mentioned alongside Pencil (http://pencil.evolus.vn http://pencil.evolus.vn) when searching for prototy

Looks interesting and will take a look into it. I saw it mentioned alongside Pencil (http://pencil.evolus.vn http://pencil.evolus.vn) when searching for prototyping tools. Sort of reminds me of Visio. Would that be an apt comparison?