I've seen several star apps on itunes but wanted to get comments and recomendations from forum. Starmaps pro is $18. My personal problem is that I wind up buying several app before I find the one I like. I do not know anyone who has a star app so I can not see first hand. On other applications I find myself buying several different apps before I find the best one. Trying to get it right this time. Any recomendations from personal use?