In Pictures: Top 15 augmented reality apps for iPh...
What's the name of that especially bright star overhead? Just point your phone at it, and the Star Chart app will tell you. You can also look around and tap anything in the sky to learn about what you're gazing at; Star Chart will tell you the distance and brightness of that object. The app also works in daylight, as well as when it's cloudy outside.
In Pictures: Top 15 augmented reality apps for iPhone and iPad