Barnsley, I'll think about it. It probably be a lot of work to create an app, so I don't think I'd want to wreck these people's project while I am learning. However, I will think about creating my own app, something a bit simpler.
As for chipping in, I see what you are saying about learning from chipping in through small ways so that I could learn something. That though would honestly be very different and uncomfortable for me considering I have never done anything of the sort. I am not sure what I could even do, or if I could help. I am not so sure about learning that way, but I'd like an elaboration on what you think are benefits. Maybe, if I think through it more, I can will myself past some unease.