This app is pretty good when you have it outside. Unfortunately I use it inside to check on sun rises and sets, the moon etc.
The app is unworkable because it keeps trying to relocate itself, even on a saved spot. I go to settings and turn off location services but the app keeps asking me each 30 seconds or so to "move the phone in a figure 8". As I can't turn this off it is incredibly furstrating and I am forced to purchase a different app instead - generally the other apps are cheaper.
I guess if you are planning to use it solely on an iPad it will be ok but for the iPhone it unfortunately is not working well on the iPhone - I noticed there is another one star rating in the reviews with the same problem.
Good for iPad, useless for iPhone