This thesis presents the development of "Student Den," a mobile application designed to support international students adapting to new academic and social environments. Drawing on personal experience and user research, the project identifies key student challenges such as cultural disconnection, financial stress, and lack of access to local services. The system was developed using Flutter and Firebase, with a user-centered design approach guided by surveys and iterative prototyping. Core features include personalized discount listings, cultural event discovery, job opportunities, and secure account management. The app’s architecture emphasizes modularity, scalability, and real-time data updates. Testing and feedback show promising potential to enhance student integration and well-being.