Sale has ended but you can still get this app.
Download Now
WizPar

Official Description

You are now able to read, post and access all your newsgroups, on the move.
It's that simple. Everything you already enjoy about Usenet, with greater freedom because it's now accessible from your mobile.

Note that you need access to a news server. Your Internet Service Provider may have one, otherwise there are several commercial Usenet services available.