This is basically what I want in an editor. I used to use PlainText, but then they disabled the ability to edit *.markdown files in recent updates. So I was pleased when I found this, and used it for quite a while.
But theres an issue when you have a slightly longer document (mine was at 5000 word). Trying to scroll up to look earlier in the document will keep pulling you down to the bottom. Its basically unusable at that point.
So points for being polished and lovely, and mostly working, but a few stars off for a show-stopping bug.
Tumbleweed1250125 about Notesy for Dropbox, v2.5.1