The iPhone app also supports Fever and Readability integration, lots of sharing options, and other features that will be showing up in the iPad and OSX apps in the next few months.
BTW, the OSX and iPad apps will be available for free (until they get those updates). If you're looking for an iPad news reader app then this is probably worth checking out.
It's times like this that I regret that Apple-only apps don't get much attention on this blog. I keep hearing good things about Reeder but I have not used it myself. Have you tried it, and if so what did you think?