Hey sorry took me a bit to reply, headaches have been driving me insane.
I now own 3 astronomy apps, StarWalk, Luminos, and Distant Suns. The only one I use anymore is Luminos for several reasons..
So far its the only one that uses high def graphics and textures, the only one that lets me zoom REAL close to objects (in starwalk I can only zoom to a moon or planet to about the size of my thumbnail). Luminos also provides alot more technical data, articles and links...also provides full credit to all agencies, individuals and organizations involved with any texture they use and I respect that alot. It just has much higher production standards and isn't gimmicky.
Oh and yes, in Luminos you can just hold it up to the sky and it goes into the auto mode which lets you just turn about and it will show you your actual sky. Another big difference with Luminos is it uses actual 3D terrain for wherever you are, so if there is a mountain blocking your view of something you will actually see that there is a mountain blocking your view which is awfully nice to have.