I am very interested in answers to this question even if (being new to Pythonista) I can't help.
I would like to deploy UI apps on devices for users (family) who would have a lot of difficulty entering Pythonista, finding the script and then finding the run button and then finding their way out of it.
Ideally I would like to encapsulate my script/UI in an App available through an Icon to the user. I am not interested in publishing to the AppStore because these apps are for customised day to day management and are of no interest to other users. (I don't mind publishing the code, I just don't see the need to clutter the AppStore with trivia).