Busai Kaunas is a free Android app developed by Nanoline that provides comprehensive information about public transportation in Kaunas City. The app does not require a constant internet connection as the schedule updates are sent along with app updates from Google Play.

The main features of Busai Kaunas include the ability to view and search for routes and schedules of buses, trolleybuses, and minibusses; display of the nearest departure times on the schedule; search for public transportation stops and display of planned departure times based on the schedule; interactive map for viewing routes and stops; and the ability to save favorite routes and stops for quick access.