Билайн трекер is a mobile application developed by ПАО ВымпелКом for corporate clients of Билайн Россия. The app is designed to help companies manage and monitor their remote workforce, including couriers, merchandisers, and drivers. It is available for free and can be downloaded on Android devices. However, it is only accessible to corporate clients who have subscribed to the "Компас" service.

One thing to note is that prolonged use of the app with GPS turned on in the background may lead to a decrease in the device's battery life. Also, to ensure the correct functioning of the app's new features, users must clear the app's cache by going to Settings - Apps - Билайн трекер - Storage - Clear data. If you encounter an error with the code 504 during an update, it is recommended to uninstall and reinstall the app.