Cuando Llega Línea 29 is a free Android app developed by EFISAT that allows users to track the arrival times of buses at a particular stop. The app provides several options and features to help users stay informed about the arrival times of buses.

The app allows users to view the approaching buses on the map and save their favorite stops for easy access. The information is available 24/7 and can be accessed through the phone's internet service without any additional cost. Additionally, users can share the app and upcoming arrival times via SMS and social media. The app also provides the ability to view bus routes on the map.

Overall, Cuando Llega Línea 29 is a useful app for those who rely on public transportation and want to stay informed about the arrival times of buses. With its user-friendly interface and convenient features, it can help users plan their journeys more efficiently.