新京成線アプリ is a free Android app developed by 新京成電鉄アプリ. This lifestyle app provides users with real-time train information, including updates on train operations and delays. It also offers a visual representation of the current location of trains on the 新京成線, allowing users to track their progress. In addition, the app displays useful information about each station, such as transfer details and bus stop information. Users can also access related web pages, including the 新京成ホームページ, ぷらっと新京成, Bus-Vision, and JR Real-Time Route Search, directly from within the app.

Please note that the app uses location information to display the nearest station. It also downloads data of up to 1MB after user confirmation dialog is displayed for updating timetables and other related information.