Limited usefulness

I have a slow irregular heartbeat. This app will not complete a reading when I am at rest while my heartbeat is slow irregular. Useless. If I have my heartbeat up and more regular (on treadmill) then it will record a scan & heart rate. The developers of this app should modify it so that it works with a slow irregular heartbeat. The "Cardio" app will.

Retired70+Mountineer about Cardiograph Classic