Nice writing experience
This app does exactly what it claims and I really enjoy the inverted white text against a dark background - it definitely makes for a soothing writing experience. However, its a little overpriced for what you get, which is exactly what is advertised: a pretty text editor. Pages is $20 and provides a hundred times more functionality and even has a similar, distraction-free full-screen mode. Its hard to justify charging $10 for Writeroom, but it is still a great app nevertheless.
Junior$$7 about
WriteRoom, v3.0.1