Downloadable mobile applications for use with monitoring and diagnostic devices in the healthcare industry; downloadable mobile applications for use with heart monitors; downloadable mobile application for use with electrocardiographic (ECG) sensors and recorders; downloadable mobile applications for analyzing and reporting heart beat and rhythm data; downloadable mobile applications for analyzing and reporting electrocardiographic (ECG) signals and data; downloadable mobile applications for analyzing and reporting cardiac abnormalities, arrhythmia, atrial rhythms and ventricular rhythms; downloadable mobile applications for detecting, diagnosing and analyzing cardiac abnormalities, arrhythmia, atrial rhythms and ventricular rhythms in athletes; electronic diaries; downloadable mobile applications for patient recording and tracking of health-related data, symptoms and conditions; downloadable mobile applications for patient recording and tracking of cardiac-related data, symptoms and conditions