Public transit apps are mobile applications designed to help users navigate public transportation systems. They provide real-time information about bus and train schedules, routes, and delays, making it easier for commuters to plan their journeys. Many of these apps also offer features like trip planning, fare calculations, and notifications for service changes. These apps often integrate data from various transit agencies, allowing users to access information for multiple modes of transportation, such as buses, subways, and trams. Popular examples of public transit apps include Google Maps, Transit, and Citymapper, which enhance the commuting experience by providing essential travel information at users' fingertips.