There is an app for that (not to sound cliche). LOL but seriously, I can't remember what it's called but after calibration it will attempt to plot certain key stars and objects. I didn't download it when I came across it because it didn't get very good reviews.
Another app that's good and works well as a sister app for starmap pro is GoSatWatch if you're good enough at catching and tracking sats including the shuttle and space station. I haven't had a chance to use it yet because I don't have a motorized telescope (which makes sat watching almost impossible).
Edit: found it... pUniverse for $2.99. And I was wrong about the rating. Apparently it gets some pretty good reviews so I just downloaded it.
Not bad but definitely not starmap pro. The "motion" feature isn't exactly "augmented reality" as it does not use your camera at all but does seem to do a fairly good job at positioning your view on the supplied map. Very nice if you're a beginner and have no idea where to look for objects. If you don't want to spend the money on starmap pro, this one might be worth the download. Not quite as good as starwalk though.
Edit 2: Well what do you know... StarMap Pro has the exact same feature as pUniverse!!! LOL Looks like I just wasted $2.99 on pUniverse.

oh well