I have tried several devices which record heart function (ECG) and connect to a service that reviews the results. I have found the best device and service to be CardioComm Solutions’ HeartCheck BT Pen. My cardiologist prefers the reports from CardioComm Solutions to those from others like Kardia. He says Kardia’s tracings are “pretty graphs” but sometimes filters too much information that he could interpret if the information were there.

Tom V.
California, USA