I've worked on a number of mobile and business applications over the years. And have always just used the tools I had at hand to mock up screens, write specifications, and show user groups what the application would look like. By tools at hand I mean print-screen and Paint, PowerPoint, Excel, or even Flash. However I always felt that there was probably a better way, especially when you have a large user community and are only able to leverage a small group in a workshop. I happened to be following up my testing mobility blog and came across Etay Gafni from intuito who had been kind enough to leave a comment.