Apple rolled out a redesigned Blood Oxygen app for Apple Watch in the U.S. with watchOS 11.6.1, and we're here to help you figure out how to use it.

The smartwatch's Blood Oxygen app lets you measure the oxygen level of your blood on-demand. It's been MIA for more than a ...

Apple just rolled out a redesigned Blood Oxygen feature to specific models, following a recent victory in a legal dispute.

Updated Aug.15 with more details of the update and how it will work.

Apple finally reintroduced the Blood Oxygen feature for Apple Watch models in the U.S. this week - here's how to use the app.