Very good, but typography can have more polish

First of all — excellent app, simple and convenient. If you are searching for a distraction-free text editing app — this is very close to being *the* choice.

However, couple of typography-related things should be improved:
1) Baseline is determined incorrectly for several popular fonts, including Arno Pro, Garamond Premier Pro, Myriad Pro (and probably others). This results in misplaced (moved down) I-beam cursor and spellchecker red line.
2) No support for ligatures. This is very unfortunate — even Pages does have them, and it makes text typeset with modern typefaces look really polished.

flyingmutant about Byword, v1.5