NewsTap 4 - Usenet Newsreader

NewsTap is an Usenet Newsreader for the iPhone and the iPod Touch.
Giganews Newsgroups

You can download NewsTap from the Apple AppStore.

There's also a free "Lite" version of NewsTap available in the AppStore. This allows you to test the App before buying it. The Lite version has some limitations: you can only subscribe to one news groups at the same time, there's no backup feature available and there are less filter settings available.