Has it been integrated into the MacOS Unity? Because months ago I downloaded Unity iPhone 2.x and just a couple of days ago, I googled Unity iPhone, as I had done before, and downloaded Unity. I got a free license at first, but have since purchased the iPhone publishing license. Trouble is, unlike the version I downloaded months ago, this one is just called "Unity" (not "Unity iPhone"). And although I have replaced the free license online with the purchased one, this version still doesn't come with things like Unity Remote. And Build&Run (having been configured for iPhone/iPad publishing) doesn't publish to my iPad.
There is no Unity iPhone anymore. The license is now "Unity iOS", and there is no separate Editor for it.
Change your build platform to iOS in File -> Build Settings.
http://unity3d.com/support/resources/unity-extensions/unity-remote