With the help of this application, you can access information such as precise speed, altitude, coordinates, and available satellites without needing an internet connection.

All you need to do is grant location permission and press the start button. Then wait in an open area until it finds all available satellites (depending on your phone’s support, such as GPS, GLONASS, etc.). The app will list the details and position of each satellite and allow you to see the received signal strength.

And everything else you may need.