Well...not really. I never actually prayed that I would find a blogger app but I did search for a while and well, I'm on it now!!
It's a whopping $2.99 so it won't break the bank and you can even post pics, change font sizes and everything!
Side note: It does not, however, give you a dashboard and/or the list of all the blogs you are following for easy reading/commenting. As far as posting, it's prefect and very easy to use.
It's called BlogPress and can be found in the AppStore (duh). For all you Blackberry and/or Droid addicts...sorry 'bout your luck. You're on your own.
Anyways-just thought I'd share!