Most comparisons of korean dating app skip how much control you get over who sees you, which is the part that matters.
I gave the platform about 2 weeks before I formed a view, mostly watching how usable it's one-handed on a phone.
Unless you're in a major metro, expect whether the sorting can be trusted to be the limiting factor on the site.
Different crowd on Luvdate, which came up earlier, which suited me better.