The present invention describes a method of monitoring vital health parameters on a user device. According to one aspect, the vital health parameters are monitored using heterogeneous fusion two independent sources present in the user device namely an accelerometer and a microphone. The accelerometer captures motion of heart whereas the microphone captures audio of the heart rate. The motion signal as well as the audio signal are normalized to remove noise and unwanted motion and audio signals. The normalization yields accelerometer peak signal and audio peak signal. The normalized signals then undergo a fusion process where it is checked whether the accelerometer signal and the audio signal matches with respect to time stamp. If the accelerometer signal and the audio signal matches with respect to time stamp, then average of R-R peak interval is computed and final output is made to display as a notification on the user device.