This is cool. I always get pesnickety when I see folks biking by with poor conformation (seat too high, too low, wonky ankle movement, and so on). This should help folks. And, oh, it's on an iPhone, not on a Symbian device. Geez, I wonder why? <rolls eyes>
"Wildlab.com's Test Rides iPhone app is geared to help you match your body to a bicycle of appropriate size. After photographing yourself in the specific position seen above, you then mark your joint locations on-screen, enter the dimensions of a bicycle, and the app tells you whether it's a good fit or not."