Over the last 10-15 years iPhoto the predecessor now referred to as “Photos” on OS (OSX) and iOS, does not work neither seamlessly or cross-platform and there are many functions Apple has removed from its original capabilities, basically dumbing down the software rather then making improvements.
For example some 15 years ago I could take a photo in “iPhoto” and icon shortcut rotate it 90 degrees in either direction, meaning to left or to the right but Apple removed that feature over a decade ago and now photos can only be rotated to the left in one direction with the rotate icon and you must go through “crop”. I would prefer “crop” and “rotate” each have an equal hierarchy and root rather than being packaged. In any case I do most of my work on an iPad but because iOS won’t allow me to use “keywords” to organize my photos…I have to work on my desktop or my laptop.
Honestly, I don’t understand why Apple has made a field for a “caption” and “add a location” in iOS but failed to add “keywords” as is built into OS.
The only improvement I’m seeing in the Apple “Photo’s” app, over the last 15 years, is that there is some type of A.I. now in the program, wherein, it can help you “SEARCH” for types of photos, so for example, if you just type in the word “cars” into the search window on an OS computer, it is able to find all the photo’s in your library with cars 🚗! That is very helpful for me! So I first conduct a search in Photos, so I can identify photo’s into categories, and then bulk edit with add keywords.

