muv-n: Realtime Sports Tracker is an Android application developed by muv-n Software. This free app is designed for athletes who want to monitor and share their training and races in real time, as well as spectators who want to follow the athletes' performance. With muv-n, you never have to train alone again. The app allows you to train with friends, while other friends can follow your training in real time. They can see your location on a map and also receive other performance statistics in real time.

One of the key features of muv-n is the ability to train with friends on the same training session. This feature not only adds an element of fun and motivation to your workouts, but also ensures your safety and provides peace of mind to your friends. The app also supports heart-rate sensor band, allowing you to track your heart rate while training.

In addition to training, muv-n also allows you to participate in races while spectators can follow you and other athletes in real time. You can also spectate races through the app, making it a great tool for both participants and spectators. If the need arises, you can even request aid through the app, and the help will know exactly where you are (only in supported official races and with the race's organization's full responsibility).

muv-n is highly energy efficient, even while using GPS and a data connection. The app can track the athlete for several hours before depleting the battery, depending on the starting battery, the device used, and other active apps.