The benefit is the ability to use a single keyboard, mouse, or trackpad to operate both the Mac and the iPad. Sidecar, on the other hand, solely turns your iPad into a wireless secondary display.

spacedesk is a free app that lets you use an Android tablet as a second display for your Windows PC. Learn how to set up and use it.

If your TV is a Samsung, you may not be using its best feature. Here's how to use Multi View to view your favorite videos and your phone screen simultaneously.