Works very well. As the review mentioned above it gives you a real good idea of where to look in the sky. However there is a discrepancy in the position of the ISS on the map compared to where it is actually in the sky. On the map it showed the ISS somewhere way past Nova Scotia over the Atlantic ocean when it was actually over Nova Scotia. Other than that you wont miss the ISS in the sky with this app! A very well done bang up job on this software!
Cheers
(-n00b-)Firefighter about ISS Spotter, v1.1.2