QuickTrain is a travel and navigation application designed for iPhone users, providing real-time information on the Chicago Transit Authority's El trains. Utilizing the CTA El Train Tracker API, QuickTrain enables users to quickly find out when the next train will arrive at their current station, ensuring they can plan their journeys efficiently. The app features both automatic location detection and a manual mode for users in areas with limited GPS signal, allowing them to find their station with minimal effort.

For those who frequently use specific stations, QuickTrain offers a convenient favorites feature, allowing users to set shortcuts to their most-used stations. This functionality enhances the overall user experience, making it easier to access essential transit information swiftly. With its user-friendly interface and practical features, QuickTrain stands out as a reliable tool for navigating the Chicago transit system.