I think it's worth pointing out that as a mobile app development
platform, pyjd is a bad idea. Pyjamas is just a python web framework
used either to generate Javascript, or to run directly in Python -
assuming there is a python-accessible browser engine available (this
last part is why there are so many problems with pyjd on several
platforms).
I would be surprised if there were compatible browser engines on all
the desired mobile platforms.
Perhaps it would be a better approach to try to build the app using
pyjs, and serve it via the server, as a more traditional web app. It
has a fighting chance that way, of living on all the desired
platforms.
Just my opinion.
Rich