Cuándo llega La Perlita is an Android application developed by EFISAT that assists users to track bus arrival time. The app provides real-time information on the location of the bus, which enables users to plan their trip accordingly. The app is free to download and use, and it falls under the Travel & Navigation category, specifically Maps & GPS subcategory.

The app offers several features, such as the ability to view the Omnibus approaching on the map, store favorite stops, view the route on the map, and share the application and next arrivals via SMS and social networks. Additionally, the app provides information 24 hours a day, 365 days a year, and the consultation is made through the Internet phone service, at no extra cost.