Pulse Measurement in Foot
Do the iWatch7 Heart Rate and EKG Apps work on the foot and big toe ? This is to check that blood flow is reaching the foot after femoral bypass surgery. Accuracy isn’t critical . Thanks
Apple Watch Series 7
It may, but there is no guarantee. If you have questions about wearing your Apple Watch, contact Apple Support.
Wearing your Apple Watch - Apple Support
Start with a good fit. Even under ideal conditions, Apple Watch may not be able to get a reliable heart rate reading every time for everybody. And for a small percentage of users, various factors may make it impossible to get any heart rate reading at all. But there are things you can do to help Apple Watch get the most consistent and best heart rate readings possible. Learn what else affects your reading.
Monitor your heart rate with Apple Watch - Apple Support