Definitely fun to play with
I had no idea how to use this when i first got it so i emailed customer service. And i got the person who designed it to explain it to me. I thought that was pretty cool. As to how it works. I find it is decently accurate. Not perfect 100% of the time but pretty much dead on most of the time. At least so far. Yesterday i went out to a few of my favorite locations and saved them in my favorites. This is very cool cause i will be able to predict when i can go to anyone of these places when the sun or moon is in the perfect position for a shot i may be visualizing. Granted, you do not have to physically go to these places to add to your favorites - you can simply use the map to hone in on a spot and save it that way too. But i like knowing that if i go to a spot to save it, it is in the exact area i want to shoot and i can visualize the shot better. Either way is fine. I am giving this 4 stars instead of 5 because of the few instances i have seen it be off. Otherwise, I am more than happy to have this app in my arsenal of goodies for photography.