There are plenty of star charts around the app store that feature augmented reality, where you tilt your iOS device toward the sky and the app reveals what planets and stars are in your field of view. Almost all are paid apps, so it's nice to see that Star Chart has gone free, although there are the inevitable in-app purchases. More about those later.
In the free version you get some very nice graphical representations of the night sky, a way to identify and learn more about what you are seeing. If you want to explore other areas of the sky without using the AR feature, just drag your finger over the screen. You can even point your screen down below the horizon and see what other parts of the world will be seeing at night.
