EarthQuake Map. Gems and Minerals by Varietal for iPhone. The Rock Cycle. Landforms. Folds and Faults HD. Earthquake Hound. Earth-Now for iPhone 3GS, iPhone 4, iPhone 4S, iPhone 5, iPod touch (3rd generation), iPod touch (4th generation), iPod touch (5th generation) and iPad on the iTunes App Store. Earth Science Through Photography. OurWeather. Volcano!!! NASA App HD for iPad on the iTunes App Store. Solar Walk - 3D Solar System model for iPhone 3GS, iPhone 4, iPhone 4S, iPhone 5, iPod touch (3rd generation), iPod touch (4th generation), iPod touch (5th generation) and iPad on the iTunes App Store.