What's the best Android app for navigating public transportation in a new city and finding the fastest routes?

Citymapper is an excellent Android app for navigating public transportation, providing real-time arrival information, and finding optimal routes in unfamiliar cities. It excels at helping users seamlessly navigate complex urban transit systems by combining data from various sources, including buses, trains, subways, ferries, and even ride-sharing services. The app's intuitive interface allows users to quickly input their destination and receive a comprehensive overview of available routes, including estimated travel times, costs, and potential disruptions. Citymapper also provides step-by-step directions, ensuring users stay on track throughout their journey. For those new to a city, Citymapper offers invaluable assistance in understanding the local transit network and avoiding getting lost. The app's offline capabilities further enhance its utility, allowing users to access saved routes and maps even without an internet connection. Furthermore, Citymapper integrates with ride-hailing services, providing a convenient option for combining public transportation with private transportation.