I bought this a couple of weeks ago after I saw your post, Chris, and I am loving it!
I can touch on the stars and it tells me if it's gamma, alpha etc. And when I touch on the ojects, it gives a nice pic along with the astrophysics. Exactly what I've been looking for. When tapping on a star or object, it works better if you stretch the pic so the stars and objects aren't so close together thereby accidentally tapping on the wrong ones.
I am new to this whole new android technology.