Looking for a Dropbox notes client

I'm looking for a new Dropbox notes client with these things:

- has the same UI flow as the stock Notes app (simplicity is key)

- syncs to one folder in Dropbox of the user's choosing

- supports both iPhone and iPad

- doesn't have to have Markdown

- don't mind paying upfront for a good app but hate IAPs

Does anyone use Dropbox notes clients? Would love to hear your recommendations, thanks!