And yet I find it irrelevant to making good use of it.
I guess you are conveniently ignoring the fact that I am able to accomplish keywording images in other apps on my iPad ... for years now ... If independent developers with a staff of one can do it (years ago), why is it such a monumental, insurmountable, cost prohibitive task for a multi-billion dollar, multi-national, corporation with far more resources that measures their monthly subscribers in the millions?