The 無料巡回バス app, developed by 日の丸自動車興業株式会社, is a useful application for accessing information about three circulating bus routes: "Marunouchi Shuttle Bus," "Metro Link Nihonbashi," and "Metro Link Nihonbashi E-Line."

With its easy-to-read illustrated map, users can track the current location of buses on each route. Additionally, the app allows users to search for the nearest bus stop, check the estimated arrival time of buses, and access information about facilities near each bus stop. It also integrates with map applications to provide route search functionality to each bus stop.

Whether you are traveling in the Otemachi, Marunouchi, Yurakucho, Nihonbashi, or Ningyocho areas, this app is a must-have for navigating the city efficiently.