I'm one of the creators. We just couldn't find anything comparable - SPSS, Stata, and R all require significant time/training. We aren't certain where this project will go, but thought it might be useful to a lot of people (6 research labs have been testing it with us for the past couple months). Love to hear your feedback and we'd also like to get more people involved, so please contact me if you're interested!
Do you think there would be immediate interest? I have considered building a mobile development tool, but didn't think mobile dev. was popular. However, it
might be of interest to amateur programmers who lack access to laptops/desktops. Would be easy to build :)