Just like its Mac counterpart, WriteRoom for iPhone gives you a simple application to create a document in. When you open WriteRoom you are presented with a black screen -- all of your documents are located here. Clicking on a document name will place you in editing mode.
To create a document, just tap on the "+" button at the top right of the screen and a blank document will show up with a subtle blinking cursor against a black background.
WriteRoom's developer has created a neat way to retrieve documents from your iPhone and get them on your computer. You can browse, edit, and even create a new document on your iPhone from Safari. All of this is dynamic, so as soon as you create a document in Safari, it appears on your iPhone and vice versa (a web page reload is necessary in your web browser). The main problem with Bonjour sharing over Safari is that it only works with Safari's Bonjour bookmarks.
Overall, WriteRoom for iPhone is solid, just works, and is completely worth the $5 (US). WriteRoom is simplicity at it's best, and has a very nice user interface without distractions and fancy addons. You can purchase WriteRoom for the iPhone from the iTunes AppStore for $4.99 (US). Be sure to check out our gallery of WriteRoom screenshots.