The process for downloading an EKG varies depending on whether you use an Apple Watch, a Fitbit, or a specialized device like KardiaMobile. How to Download an EKG from Apple Watch
: Choose the specific EKG you want to download from the list of results.
Modern smartwatches and portable monitors have made it possible to record an electrocardiogram (EKG/ECG) almost anywhere. However, having the data on your wrist is only half the battle—you often need to "download" or export that data into a shareable PDF format for your doctor to review.
: Tap the Share icon (the square with an up arrow) in the top right corner. You can now save it to your "Files" app, email it directly, or print it. How to Download an EKG from Fitbit
For users with a Fitbit Sense, Charge 5, or Charge 6, EKG data is managed within the Fitbit app . Take an ECG with the ECG app on Apple Watch - Apple Support
: Select Heart , then tap Electrocardiograms (ECG) .
: On your iPhone, tap the Browse tab at the bottom right.