<p>Augmented Reality (AR) technology offers transformative potential for enhancing user interaction and engagement within mobile applications. A unified and adaptive AR integration framework is proposed in this paper, distinguishing itself from prior work by addressing multiple domains—specifically education and healthcare—rather than focusing on isolated use cases. The framework is underpinned by synchronized hardware-software systems and real-time signal processing capabilities, enabling responsive and immersive user experiences. Grounded in a comprehensive review of current AR technologies and their implementation in mobile user interfaces, the framework is both conceptually robust and practically validated. Empirical validation was conducted using a custom-built AR prototype developed with Unity 3D, Arduino, and oscilloscopes. Data collected from 350 participants across diverse demographic and professional backgrounds demonstrate improvements in user engagement, information retention, and task accuracy. Technical challenges, including hardware constraints, usability limitations, and accessibility concerns, were systematically identified. Corresponding solutions are proposed to enhance the scalability and usability of AR-based mobile applications. Results indicate that AR can significantly enhance learning environments, professional training modules, and real-time task performance. Nevertheless, limitations concerning hardware requirements, demographic diversity, and long-term impact are recognized. This research concludes by offering practical guidelines and design principles to support developers and interface designers in effectively integrating AR technologies into mobile platforms.</p>