The macOS Dock displays apps you add to it or that you run. Here's how to make it display only apps that are currently running on your Mac.

If you have hidden an app on your iPhone to keep away from prying eyes, but don't know how to find it again, follow this step-by-step guide.

How to Set Default Apps on iPhone and iPad Open Settings on your iPhone or iPad (running iOS 18.2/iPadOS 18.2 or later). Scroll to the bottom and select Apps.

Lastly, highlighting an icon in the App Switcher and tapping Q has to be one of the fastest ways to individually quit open Mac apps, and probably qualifies as our favorite App Switcher trick.