Công dân số is a free utility tool available on the iPhone platform, developed by VIETNAM POST. The app focuses on providing various functions to users, including login features and public administration services. Users can conveniently submit documents online, request home document submission, look up administrative procedures, manage files, locate documents, and check document statuses.

Moreover, Công dân số offers news and information sections, presenting government news, local news, categorized news, and useful articles. Additionally, users can utilize the app for feedback and suggestions, along with various utilities such as map searches, post office lookups, national digital knowledge, national data portal access, information on martyrs, and bus schedules.