This meta-analysis explores the use and implementation of mobile applications in library environments, identifying trends, service models, user engagement patterns, and technological challenges. The study, the integration of mobile applications in library environments is revolutionizing traditional service models by providing features like remote catalog access, digital lending, personalized notifications, virtual reference support, and seamless access to e-resources. This research examines how libraries are adopting mobile solutions to meet the evolving expectations of a digitally connected user base. Benefits of mobile integration include increased accessibility, improved user satisfaction, and enhanced operational efficiency. Challenges include app usability, system integration, digital literacy, and data privacy concerns. The study emphasizes the need for strategic planning, user-centered design, and continuous evaluation to fully realize the potential of mobile apps in library services. It recommends best practices and future research directions to support innovation and sustainability in mobile library services.