Danang Smart City is a free Android app developed by Danang City that provides a wide range of services and applications for both digital citizens and the government. The app offers several features that allow users to access public services, provide feedback and suggestions to the city government, search for free public toilets, and even give and take valuable items for free. It also enables users to access information related to Covid-19, epidemiological data, and bus schedules. Moreover, users can access the city's electronic government information system, document and executive management, and one-stop application. Overall, Danang Smart City is a comprehensive app that provides a one-stop solution for digital citizens and the government to access various services and applications.