I use the iOS app daily, and while it's not the prettiest thing in the world, it has nearly every feature of the desktop client, including full scripting support for card contents, which is amazing for things like collapsable elements and media. And, at the end of the day, it's about what you learn from using it that matters.
That's part of my problem. I actually don't love how many billion options Anki has, and I'd love something with a more opinionated UI.
(I think the data model underneath Anki is...showing its age (and lack of explicit design) and building that on top of it would not be too easy. I've thought about it a few times.)