"Planets" is absolutely free in support of the International Year of Astronomy 2009. Over 1.2 million downloads so far!
Is that dot, a star or a planet? Answer questions like this with "Planets". Discover when you can see a certain planet, and where to look for it in relation to the stars.
Provides lots of interesting information:
location of the sun, moon, and planets in the sky
maps of stars and constellations
rise and set time of the sun, moon, and planets
current and future moon phases
3D globe view of all planets and the moon
facts sheet for each planet, including moon names
· iOS 3.0 or later
· Compatible with iPhone, iPod touch, and iPad
What's New in This Release: [ read full changelog ]
· Sky 3D: improved motion tracking on iOS 5 and up
· Added Jupiter moons discovered since 2010