Liked what I was able to do, lots of exploration left, too! One little niggle, though: because Apple makes file-extensions sort of "whatever", it renamed a jpg from my phone to jpeg when I *shared it to my iPad.... That's fine, even though the OS hides file extensions from users and won't allow changing them directly!
But when I wrote a quick shortcut to open a selected photo from the "camera roll" (old terminology) the action failed; it or the system displayed an error claiming that Imaengine could not handle files with the "Unknown Filetype '.jpeg'". How stupid is that? A failure of sytem flexibility.
I guess the developer has to add jpeg file-types as acceptable input. Seriously, a jpeg is a jpg. This was news in 1992? Please add the ability to input files with the jpg, jpeg, jpe, and other names for jay-pegs!! It would be great if we could have the ability to name the file extension of saved (*shared in Applese) work-files. It would be really cool if we could save directly (*share as) .jpg .jpeg (or .gif or .pdf, possibly other vector formats). That's a lot to ask, but as I'm a 'creative', boundaries are difficult for me....