The Electrocardiogram (ECG) is an important tool to interpret a wide range of heart conditions. Early warning and patient awareness are critical in preventing permanent heart damage and saving much of the heart muscles. These critical conditions motivated us to propose an application that shows promise for long term ambulant ECG monitoring. The aim of this paper is to develop a prototype android ECG application that works with existing ECG acquisition device. The application will be used for the realization of ECG data signals that are sent from the ECG acquisition device via Bluetooth communication, calculate heart rate and plot it on android mobile phone, and also send this information to the concerned physician through server. We have tested this application in real time by collecting the ECG from the patient in stationary as well as moving conditions. In both situations the application fulfills requirements of the proposed system. This paper describes a new concept for wireless and wearable electrocardiogram (ECG) sensor transmitting signal s to a diagnostic station at the hospital, and this concept is intended for detecting rarely occurrences of cardiac arrhythmias and to follow up critical patients from their home while they are carrying out daily activities. The ECG-sensor is a compact electronic electrode which easily can be replaced by the patient himself; just stick it to the chest. The ECG is continuously recorded with a built-in automatic alarm detection system, and the system can give early alarm signals even if the patient is unconscious or unaware of cardiac arrhythm