Guaranteeing the punctuality of train operation schedules and delivering emergency situations are major elements of subway transport services. Over the past five years, about 2,000 subway accidents have occurred, and a total of 80 protests against illegal subway operation by the National Association for the Elimination of Discrimination against Persons with Disabilities have reached in the last two years. In this paper, we developed a notification pop-up service and a community service that informs subway users of emergency situations such as accidents and protests in real time. The notification pop-up service implemented by the Android app improves the problem of disaster safety text reception error and is developed using the Firebase Cloud Messaging (FCM) function. For an optimized screen, PHP and PHP's phpMyAdmin are used to provide a community service, and real-time subway operation information service using a public API is also provided. The purpose of this study is to develop an application that can improve the convenience and safety of subway users.