SkySafari 4 is the most comprehensive astronomy app available. It's a powerful planetarium that fits in your pocket. It puts thousands of stars and planets at your fingertips. It lets you find objects in the sky using your device's built-in compass and accelerometer. It includes hundreds of astronomical images, and contains encyclopedic descriptions of the constellations, stars and planets. Use the interactive star chart from anywhere on the globe, it shows you all of the stars and planets at their exact spots even if they are difficult for you to see.
[Top Ten] Strong database for identification of space objects
It has a very strong database of information about stars, star clusters, nebulae, galaxies, all major planets, moons, dozens of asteroids, comets and satellites. Users can animate transits, conjunctions, eclipses, and other events. It is very informative, users can learn the history, mythology, and science of the heavens from hundreds of object descriptions.
Tips for using the product
The app does not require an internet connection. Try upgrading to premium if you find the app useful.