Simple enough to use and works just fine. For the layman user, it tells you of normal vs. abnormal ECGs so it couldn’t be easier.
HINT: The device itself doesn’t recognize WHO is using it.
So when you download data for different people from the device to your iPhone, it is easier to ADD a new user & select them *before* moving the recorded data over onto the iPhone.
However in case you forget to, you can go in and select which user’s profile you want the data applied to and saved under. NICE!
The only reservation was, the timestamp of a recording jumped from 24hr military time to 12hr am/pm time between several sessions...which seemed a bit weird to me.