Our premium bundle consist of Cardiograph Classic and the brand new Cardiograph. Both apps provide fast and reliable way to keep track of your heart rate on an iPhone, iPad, and Apple Watch. Cardiograph Classic is the original app downloaded more than 10 million times on iOS alone with the classic design and feel. The new Cardiograph is the next step into the heart-measuring apps. It is minimalistic, simple and with improved measurement algorithm. Get the two apps at a special discount price!