Non-GUI editor in My NS.
Others: Apps for iPhone OS do not work on webOS, Android or Blackberry. A new app would have to be written for each platform. And Apple only gets 30% of the app's revenue; the rest goes to the developer/NS. Regarding pricing, consider the prices for contributer status. $10 would not be unreasonable for a fully featured app. If only the forums were viewable, $1.99 would not be unreasonable.