Star Chart is described as 'Can’t see the moon? Want to know where it is? Look through the eyes of your device to see a virtual window into the whole visible universe' and is a Star Map in the education & reference category. There are more than 25 alternatives to Star Chart for a variety of platforms, including iPad, iPhone, Android, Android Tablet and Mac. The best alternative is Stellarium, which is both free and Open Source. Other great apps like Star Chart are Sky Map, KStars, Star Walk (series) and Sky Guide.
SkySafari is a powerful planetarium that fits in your pocket. It puts thousands of stars and planets at your fingertips. It lets you find objects in the sky using your device's built-in compass and accelerometer.
SkyView is powerful, easy-to-use app that answers questions about stars, constellations, and more. Simply point the camera to the sky, tap on what you see and discover neat things about these sky objects.