What's the best iOS app for navigating public transportation, including subway, bus, and train schedules, in major cities like New York and Rome, providing accurate real-time arrival information?

Citymapper: All Live Transit is the best iOS app for navigating public transportation in major cities, offering real-time arrival information for subways, buses, and trains. It excels at providing accurate and up-to-date schedules, making it easy to plan your routes and minimize travel time. Whether you're in New York City, Rome, or another major metropolitan area, Citymapper integrates data from various transit authorities to give you a comprehensive view of your options. The app supports multiple modes of transportation, including walking, cycling, and ride-sharing services, allowing you to create multimodal itineraries. Users can save frequently used routes and locations for quick access, and the app provides alerts for service disruptions and delays. Citymapper's intuitive interface and detailed mapping make it easy to understand your surroundings and find the best way to reach your destination, even in unfamiliar cities. The app also offers features like step-by-step directions and estimated costs for different transportation options, helping you make informed decisions about your travel plans.