Yeah, I liked Typora at first, but it's kind of shady from a licensing standpoint (it's free until it's not), and Electron makes stuff clunky as fuck. A text editor shouldn't take 150MB of RAM.
I haven't touched the iA desktop apps. It seems like they could be nice, but honestly there are a lot of free programs that do at least as much (if not more). Check out FocusWriter and WriteMonkey (the old version, not the beta, which uses Electron).