happyRhythm3 Dual(P) is the companion app for our flagship high-end , portable ECG (Electrocardiography) device . This app requires the user to put the phone in flight mode , so that no external communication can interrupt the app's operation . It connects to the Rhythm3 device through bluetooth . You can configure the settings of ECG recording . The app continuously receives ECG signal from the device in all the channels provided in the device . It can record the signals , create pdf ECG reports , measures heart rate and also predicts various cardiac diseases , if any .