There was a twit/tweet on the UA stream about an iPhone app in the works.

I did a little digging in the AppStore and found our friends GoldenWare (who develop the current application) have published their first app in the store a few weeks ago.

Currently (and this is off the top of my head so I apologise to airlines I missed):
- Air Canada
- Air New Zealand
- Lufthansa
- Swiss

All have running apps in the Apple App Store (I'm not sure if there are Android apps around. Perhaps these are not the droids I am looking for.. )

There is a non-official United app, but I'm not linking to it - you'll have to find it yourself .

Of course, OneWorld has long beaten *A to the punch - although their app is of questionable quality and usability (least of all it doesn't cache the timetable data...)