My experience with the Apple Watch ECG and Blood Oxygen apps is that they are limited in information they provide. Based on my reading, the single lead ECG feature really just suggests if you have Afib or not. Keeping a history of those readings doesn’t seem useful. Also, the Blood Ox feature is not medical grade either. I was at the doctors the other day, and they took my blood Ox, which was 98%. I then took it using my Apple Watch Series 7, and it said 91%. So that was a disappointing discrepancy. I think they are interesting apps, but they are not really medically relevant, certainly not for trending a long term history. Any AME is going to want something more accurate.