Already multitool smart devices, Apple Watches added another buzzworthy feature last month: an app to detect sleep apnea.

Open Facer on the iPhone and tap one you want to activate. Tap the blue Add button with the icon of an arrow on a watch. That switches to the Watch app. After a few moments, the face is activated on your watch and the custom complications load.

For Series 7 owners contemplating an upgrade, the time is now – the Series 10 offers a tangible step up in both functionality and performance.

Your Apple Watch comes with 44 pre-downloaded apps, but tens of thousands of third-party apps are available for download from the App Store. And they can unlock new features, abil