AppApp is an iOS app for http://app.net. It was hastily copy pasted together at 3am and should only serve as an example of how to consume the JSON API natively on iOS. The buttons merely print JSON to the console. This should give you a great starting point from which to create your own App.Net iOS App.
There is a real UI coming, along with a much more flexiable API client, I'm waiting for a handfull of designers on App.Net to come through with PSD's.
Nick Pannuto (@sneakyness on app.net, @ataraxia_status on twitter, email)
Brandon Sneed (@bsneed on app.net and twitter, email)
You can find us in the App.net hipchat, on irc.freenode.net in #appnet. You can also buy us beer in person, if you come to Seattle or Portland.