Scrivener 3, Scrivener for iPad, and changes at apple.

[Kinsey]

This quote from AmberV (one of the L&L team) might be helpful:

@AmberV

I know the first post is rather old, but to answer that: a comparison table of differences would probably be several hundred pages long! Scrivener on macOS is a huge and extremely versatile program, whereas the iOS version is designed to be a streamlined interpretation of the core fundamentals of the software. Every single aspect of what you have on macOS, that is even present in the iOS version at all, is going to be pared back to the very basics.

It’s from this thread: Scrivener iOS vs macOS (features comparison table anywhere?)

MacOS Scrivener is like the iOS version on steroids. There are literally hundreds of features that either aren’t present on iOS, or are much reduced in functionality. The good news is that you have a 30 day trial of Scrivener before you have to pay for a license, so you can get a good feel for it. That’s 30 days of actual use, not 30 consecutive days.

If you write regularly and enjoy using iOS Scrivener, then in my opinion it will be the best $50 you could spend.