ISS Detector is described as 'Tracking the International Space Station. See it fly by. You get an notification a couple of minutes before the ISS passes your location. With the in-app purchases you can also track comets, planets, ham radio satellites and many other satellites' and is an app in the Education & Reference category. There are four alternatives to ISS Detector for Online / Web-based, Android, Android Tablet, iPad and iPhone. The best alternative is ISS Live Now, which is free. Other great apps like ISS Detector are See A Satellite Tonight (Free), Uphere.space (Free) and Heavens Above (Free).
Easily track satellites so you can see them in the night sky. This free web app provides an easy interface to find where satellites will be located at any given time, even providing a sleek view from the ground using Google Street Maps.