Abstract-The emergence of wearable sensor mobile technologies can have a great change to the conventional healthcare systems improving the quality of life for patients with Coronary Artery Disease (CAD) or heart disease. Our main aim is to build a simple yet accurate mobile application that is capable of real-time monitoring of patients with CAD which is a major cause of death worldwide. Most available mobile healthcare systems focus on the data acquisition part with little attention paid to facilitating real-time. In this work, we build a real-time monitoring application that continuously monitors CAD patients and raises an alarm whenever an emergency occurs. The proposed system is of a light weight, low price and very reliable in the detection of heart problems based on reasoning and computational algorithms. To prove the effectiveness of the proposed system, we conducted two extensive experiments for real and simulated scenarios. Our results show that the proposed monitoring system provides a 100% detection rate.Index Terms-Coronary artery disease, heart disease monitoring, wearable sensors, mobile application.