Vito Technology Inc. has Star Walk 2 (iTunes Link) for the iPhone, iPod Touch, iPad in the iTunes App Store for FREE (regularly $1.99) for a limited time.

Star Walk 2 is a next-generation tool for not only learning the exact position of stars, planets, constellations, comets, ISS, satellites, star clusters, nebulae and meteor showers in the night sky but also for investigating its’ depth like watching constellations, nebulae and satellites from aside.