Introduction: According to World Health Organisation (WHO), Heart Disease is the leading cause of Population Death. The World Health Organization survey says that heart disease is the common cause of population death in the world. The heart__ampersandsignrsquo;s main function is to pump blood into the circulatory system of human beings; if one of its ventricles fails to work, the heart gets attacked, and in due course, leads to death if not resuscitated on time. Most of the time, a heart attack results in abrupt death before the patients get any consideration from a medical professional. Objective: This paper proposes an Electro Cardiogram (ECG) monitoring system which detects the heart problem using IoT (Internet of Things) applications. Methods: It is about the IoT Based ECG Monitoring with AD8232 ECG Sensor and ESP-32 developing kit using an online IoT platform called Ubidots, which captures the sensor data and turn it into useful information. It also measures an ECG signal and transmits it to a smartphone via WiFi for data analysis. Results: The ECG signal from a patient is viewed by the doctor using their smartphone. The system utilizes the user__ampersandsignrsquo;s smart phone for data processing, and the built-in communication is used to generate an ECG waveform. By analysing the ECG wave form, it detects the heart problem, if any. If the heartbeat rate is under abnormal condition, then the Ubidots platform sends a message to the doctor stating that the patient condition is abnormal. At the same time, the Buzzer and Light Emitting Diode (LED) also make an alert to notify the condition of the patient of the caretaker. Conclusion: Since the last few decades, heart diseases are becoming a greater issue and many people lost their lives because of such health problems. Hence, heart disease cannot be taken lightly. By analyzing and continuously monitoring the ECG signal at the initial stage, heart disease would be prevented.