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Star Walk sets the benchmark when it comes stargazing apps. This is the cheapest it's ever been & first time it's been under a dollar.
"Star Walk is the most beautiful stargazing app you’ve ever seen on a mobile device. It will become your go-to interactive guide to the sky above, following your every movement in real-time and allowing you to identify over 200, 000 celestial bodies with extensive information about stars and constellations that you find."
For more info follow either link.
Price history is here…
http://appshopper.com/education/star-walk-for-ipad-interacti…
Deal has expired and app is back up to $2.99.