Video shot on mobile phones has skyrocketed over the past couple years, with the iPhone leading the pack.  And with the increase  of mobile phone footage, has come the increase of very shaky videos.  Now there’s an iPhone app to help fix the problem. The app is called SteadyCam Pro.  It works only with the iPhone 4 (for now).  And it’s free (to try).  But does it actually do what it...