Most apps appear in the App Store with little fanfare. Information Architects' Writer arrived with a manifesto. In it, the group outlines the many decisions they made in their quest to design the perfect writing environment for the iPad.
The key to good writing, they say, is focus, and the guiding principle of Writer was to minimize distractions. That means no autocorrection, no scroll bars, and no cut and paste. Just you and the text. A Focus Mode even blurs out everything but the three lines you're currently working on, keeping your focus locked on the sentence you're writing.
Information Architects also took pains to make sure that the typography was just right. After consulting with various typographic wizards, they settled on a special version of the monospaced font Nitti Light optimized for the iPad. As far as input goes, a new row of keys on top of the standard iPad keyboard adds arrow keys, as well as quick access to frequently used punctuation. The app supports Dropbox, too (as any iOS text editor worth its salt should) to keep all your files safe in a nice fluffy cloud.