From it's website:
Distant Suns (max) astronomy app is an award-winning hand-held planetarium with over 25 years of development, offering you the new way to look at the sky from on the Earth to off. Sporting over 130,000 stars, all 8 (or is it 9?) planets, the sun and moon, constellations, galaxies, nebula and star clusters, Distant Suns offers a gracefully visual respite from a busy day. While others play games, you can travel to the stars.
One of the newer features of the (max) version that I really like is the "lock" function when focusing on planets. For example, by locking the display on Jupiter, selecting the proper zoom level, and varying the time, you can watch the "dance" of the Galilean moons. Neat, informative, and fun. Perfect for understanding how the images seen through the telescope come to be.
The same lock function (only available on the planets menu (as far I know)) can be applied to the moon which shows the phase graphically. As you alter the time/date, the moon is shown as it would appear from your location.
The descriptions of objects is fairly thorough and the pics of most Messier and Caldwell are well done and will whet your appetite for more detailed views from other sources.
Obviously not as detailed as many dedicated planetarium programs on PC's, it still gives a you a handy item to carry with you.
The only fault that I have with this is that there is no "red screen" function that I can find. Obviously there separate tools for the Kindle Fire that can supply the necessary darkening/red screen necessary for observing.
I'm sure there are many other opinions about this and am looking forward to hearing them!