I think you should make it a little more obvious that you start off without creating an account, because I was a little off put at first that it looks like Personal Capital, Mint, etc where you have to provide a bunch of personal info before even seeing anything.
Anyways very interesting graphs and stuff, I'd be interested if once you have the monte carlo simulations up if there was like a demo mode to just show what it did for a test person to show the value of what it could do for me.