Ah, would I not love to write it in C or asm or D. Apple makes it really hard to publish apps on the iPad, so I believe. Of course you can use the Apple development kits for Objective C and Swift. We have developers here of course. I don't speak Python but I am told that the Pythonista development system is superb.
The Apple Workflow thing is very cumbersome but has a number of extremely high level powerful routines that are very well suited to the kind of problems that the typical developer comes across. Regexes and handling html tag soup are things that it does very well. There is a catastrophic bug in the text file handling stuff that prevents you from reading certain files because you get back the file name sometimes instead of the file content. For example, opening a text file and searching it for a string is often impossible; the conditions are not well understood. A lot of routines that hand files just take an abstract file object or handle, not the content, so sometimes you think that file access has succeeded but only as long as it is a case if one routine that operates on files passing the resultant file handle to another such routine that takes that handle as an argument.
