For the longest time, Ive given Ulysses 1-star reviews due to its (PREVIOUS) mishandling of large documents, remarking, over and over again, how it couldnt even handle the very book that its named after.
At long last, that seems to be a thing of the past. Theres still a bit of lag with larger documents, no doubt, but its no longer as big a deal, let alone no longer flat out unusable.
Id give it 5 stars, but its still missing some features that would make, again, writing long works much easier—like being able to jump to different sections (headers/chapters; however you wish to define them) as, perhaps, a window that you can pull in from the right side (instead of only having attachments available) or as a button that pulls down a list of headers, especially considering the syntax defining these headers exists within the markdown itself. Another nice feature would be for it to highlight all instances of your string while using Find (or, again, to have some sort of list of all instances appear not unlike iBooks has). In a word, even though I appreciate the clean interface, it feels like theres a lot of wasted (hidden) space. If it had the latter, the former could of course be emulated by simply searching for "#" as a string using the Find feature, but it has neither.
All that said, even though Im still going to be using a more feature-rich text editor, this is (finally) an amazing app. Even as I was critical of it before, Ive always admitted that its supporting custom CSS stylesheets and the simplicity of converting from Markdown to various formats in it makes it worth having alone. And it still does. This is still my goto Markdown converter on both Mac and iOS.