Transit Lines - Public Transit is a free iPhone application designed for travel and navigation purposes. The app offers dynamic real-time updates on transit vehicles' schedules and positions, allows users to search by stop name, stop number, or bus number, and provides stops nearby based on a set radius. Users can favorite stops, view routes on a resizable map, and plan trips within or between cities using the trip planner feature. The app covers numerous cities in the United States, Canada, and New Zealand, with more cities promised in the future.

Transit Lines aims to streamline city commuting by providing essential transit information sourced directly from cities under open data initiatives. Users can enjoy a hassle-free transit experience with real-time updates and trip planning capabilities.