Ready Jet Go! Space Explorer

This is a solid, though somewhat superficial, introduction to the wonders of the night sky. Exploring the sky and seeing how stars form pictures will certainly be fascinating to lots of kids, although they can learn only three simple facts about roughly 30 planets and major constellations. As kids look for Jet in the hide-and-seek game, there's a bit more substance in the form of carefully worded clues and the guiding hand of Jet's sidekick, Sunspot. In-app navigation controls could use a bit of clarity or explanation, as it's not immediately clear how to use the different features. But by far the most interesting part of this app is that kids can calibrate the virtual sky to their real-world sky and try to match stars and find constellations. Even with the sometimes confusing user experience and information coverage that just barely touches the surface, this feature -- and the fact that the app is free -- makes it worth checking out.