So far I think it depends on the app. I mostly use Sync which I suspect looks at Lemmy from a Reddit functionality point of view. As I recall you can’t edit post titles so I suspect the app doesn’t even include the option or it’s a paid feature.

When I use Jerboa there’s more options like editing post titles, and seeing the various up and down vote counts plus the total for posts/comments. In Sync it’s just the total of the upvotes/downvotes. I’m sure there’s more differences but these are the big ones I’ve seen so far.