Cardiogram is a subscription billed through your phone’s play store account.  Like other apps with in-app subscriptions and purchases; If...

Heart rate recovery (HRR) measures how much your heart rate drops after exercise. HRR is often used to measure cardiovascular...

No, Cardiogram will not tell you if you have atrial fibrillation at this time. Cardiogram is working on a study...

Note: gaps in Cardiogram data are normal and and do not indicate any health issues on their own. Cardiogram reads data...

Sleep stats on your daily Cardiograms are shown in the bottom right quadrant below your graph. We include your average...