MTS GO! provides arrival time information for the San Diego Metropolitan Transit System’s bus and Trolley routes. After downloading the app, simply enter the five-digit stop number into the app and the next arrivals will be sent to you automatically. If the route you’re on has real-time information available, you’ll receive real-time alerts too! You can use this app instead of sending a text message to the MTS GO! texting service. The app and the service are free, but the program requires a data plan on your phone in order to access the arrival times.