Why did Cardiogram tag a heart rate spike with a question mark?

Cardiogram tags heart rate spikes when your pulse rises without any steps detected during that time. These tags help highlight potentially unexplained activity on your timeline.

You may see a question mark tag if your heart rate increases but Cardiogram didn’t detect any movement, such as walking or exercise.

This can happen for a few reasons:

• Your heart rate naturally rises during simple actions like standing up, stress, or even eating

• Cardiogram may not have received step data for that moment

• There was a brief sync issue between your wearable and the app

📖 (American Heart Association).

What to check if you see question mark tags:

• Make sure your step data is syncing from your wearable’s source app (Apple Health, Fitbit, Garmin, etc.)

• Reset Cardiogram’s permissions to access your health or activity data

• Restart your phone and watch

• Check for any pending software updates on your phone and watch

• Make sure you're using the latest version of Cardiogram

If you’ve gone through these steps and still see question mark tags consistently, feel free to reach out to us at [email protected] and we’ll take a closer look.