* The app faithfully implements all features of the iPhone app that were publicly documented last summer, including rj_image, rj_text, sensor input, etc. There have been a few additions since (scaling and rotating text, I think); those will be easy enough to add when I see the new specs, and I'm not aware of any scenes that require them. In short, a properly written RjDj scene should look and behave the same for both versions.
How do you want the spec Peter? As a Pd patch showing how to use it? I'm going to update the help patch for [rj_image] in the RjLib, would that be useful?
Ideally, I'd like to have a list of all externals and their messages, including an explanation of the meaning of parameters (e.g., units, origin and orientation for coordinates and angles, etc.), as well as test scenes/help patches and maybe videos of how it looks and behaves on an iOS device. Realistically, updated help patches would probably be enough to get me started.