Solar Walk and Star Walk
17 app star
Developer: Vito Technology
Price: $1.99 (each)
Get it: Star Walk

Both apps have appeared in numerous Apple commercials. Solar Walk allows users to take a 3-D trip around the Milky Way Galaxy, hopping from plant to planet. Star Walk helps smartphone users pinpoint specific stars or planets by simply holding their phones up to the night sky. An Apple Design Award winner for 2010, Star Walk has more than 5 million downloads since 2009. Solar Walk has been downloaded 2 million times since 2011.

  @FortuneMagazine - Last updated April 08 2013 11:37 AM ET
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