The app pops up notification when bus is about to arrive to the stop. Download the app and you'll be able to read books, surf Internet, play video games, watch videos or take a nap on the bus without worrying that you'll miss the stop to take off. It is easy to set up: Step 1: Input the destination. Step 2: Press "Start" button. It is all done! You'll be notified when it is about to arrive. Enjoy your trip!