The app is great. The app gives notifications of when the International Space Station will go over the location that you set. You can set the notification alarms. You can also see the current location of the International Space Station any time. The only downsides are, to see the possible times that the Space Station will go over you have to have Internet. The other downside is that unlike a website this does not show a radius around the Space Station where it is currently visible. Over all it is a great app.
Star gauze about ISS Spotter, v1.5.1