To subscribe to KardiaCare, select the "Profile" tab in the bottom navigation bar.
Then select "Get KardiaCare"
You will be taken to a page explaining the features of KardiaCare, next select "Get a Free Month"
KardiaCare subscribers can choose to pay a monthly fee of $9.99 or an annual fee of $99.
To complete your subscription, enter your credit/debit card information and select "Submit Payment"
If you have questions about purchasing KardiaCare, please contact customer support here.