BUSKO is an Android app developed by GLOBAL VISUM S.A. It falls under the category of Travel & Navigation and the subcategory of Maps & GPS. BUSKO is an online application that allows users to check the balance on their BUSKO cards. The app can be used by tapping the NFC sensor available on several smartphone models, as well as by entering the ID number associated with the card.

The best part about BUSKO is that it is completely free of charge. However, it requires a WiFi connection or a data plan to function. The app is incredibly straightforward and easy to use, providing a hassle-free way to check your BUSKO card balance on the go.