This study explores the impact of the Indian Railways’ newly launched Rail One mobile application on passenger convenience and satisfaction using a Structural Equation Modeling (SEM) approach. With the digitalization of public transport services, the app aims to streamline user experience by integrating ticketing, real-time train tracking, platform services, and grievance redressal into a single digital interface. The research model investigates the influence of three key predictors—app usability, information quality, and service features—on passenger convenience, which in turn affects overall satisfaction. Data were collected through a structured online survey administered to 300 app users across various demographics. The findings reveal that all three independent variables significantly and positively affect perceived convenience, with app usability emerging as the most influential factor. Moreover, convenience is shown to be a strong determinant of passenger satisfaction, mediating the relationship between service constructs and outcome experience. The results affirm the theoretical propositions of technology acceptance and service quality in a digital public service context. The study contributes to the literature on mobile government services and offers actionable insights for app developers and policymakers in enhancing digital service delivery in public transportation. Recommendations include prioritizing intuitive interface design, ensuring real-time and accurate information, and expanding integrated service features.