You have to pay for membership if you are going to use the 6L device. I have had the membership less than a month so I really can't judge it one way or another.
I upgraded my 6 lead unit to include the KardiaCare membership option. My first reading on the program was automatically sent to their staff Cardiologist who read and sent me back a quick report on my findings. I feel that this membership option will be worth the extra expense with all of the additional features that come along with this option.
Purchased the Karia products a few years back when noticing lightheadedness. Although the device does not specifically identify Afib. the results indicated that this was a possibility. Cardiology tests identified Afib as the cause.
I experience episodes of afib and this device lets me check my heart rate whenever I want. I like to be sure everything is working properly. Plus I can go back and check my history to see if ther are any changes. My cardiologist will have the ability to see my history also. The price was more than reasonable. I am very satisfied.
Pros: Accuracy, Easy to use, Mobile App (Kardia), Comfort