Mobile health applications have become a vital component of modern healthcare, allowing individuals to monitor, analyze, and improve their health using smartphones and other smart devices. These apps track vital signs such as heart rate, blood pressure, and sleep patterns, helping users adopt healthier lifestyles and prevent diseases. With ongoing advancements, mobile health technologies are expected to integrate artificial intelligence (AI) and the Internet of Things (IoT), revolutionizing healthcare delivery. This article explores the working mechanisms and benefits of mobile health monitoring applications in enhancing personalized medicine and preventive care.