Since the apps aren't maintained any more, and probably won't in the near future, many users are waiting for bug fixes or new form factors to be supported.
If the SE development team is too busy with other projects, why not outsource the development to the community? Why not make the apps open source?
It might be some private APIs are used, well, those could be made public or written out.
This was previously requested and declined back in 2014, when the apps were being actively developed. As the apps are no longer being actively maintained, this is a request to reconsider that decision.
(Inspired by Is the SE iOS app being maintained?)