Moscow Metro Compass is a free Android application designed for quick and easy discovery of Moscow Subway and Central Circle stations. The app uses GPS or wireless networks to locate the user's position and display the nearby subway stations. The app is specifically designed for outdoor use and works best when the user is far away from large metallic objects.

To use the app, the user needs to select the subway navigation mode and wait for the app to locate their position. After that, the surrounding subway stations are displayed, and the user can select the most suitable station. The app provides directions to the selected station through a compass, and the station can also be shown on a map.

The app has several advantages, including not needing a Moscow city map or internet access. The stations are clearly represented with subway lines and distances to them, making it easy for users to navigate. The app's usability and performance are also noteworthy.

The app requires permission to access the user's precise location through GPS or wireless networks to find the nearest subway stations. However, the app does not send the user's location anywhere and only uses it on the device.

Overall, Moscow Metro Compass is a convenient and user-friendly app for navigating the Moscow subway system.