Guam Regional Transit Authority (GRTA) provides Guam with affordable, reliable, and accessible island-wide public transportation services.

The official GRTA App is an excellent way to keep informed about GRTA, notifications, and schedules. The bus schedule is a core feature of this app, making it a must have for regular riders or those who are thinking about riding the GRTA buses. The app also provides information about Paratransit reservations. Plus, it provides a neat Trip Planner.