Repurpose an Old iPad as a Computer Sub-Display for Free

Do you have an old iPad sitting in a drawer after upgrading to a new tablet? Even if it's an older model with little resale value, it can actually serve as an excellent sub-display (dual monitor) for your computer. Adding a second screen allows you to reference documents while writing or multitask during online meetings, dramatically boosting your work-from-home productivity.

For Mac Users, the Built-in "Sidecar" Feature is the Best Option

If your computer is a Mac and your iPad supports a relatively recent operating system (iPadOS 13 or later), using Apple's built-in "Sidecar" feature is the simplest and highest-quality method.

How to use:Log in to both your Mac and iPad using the same Apple ID, and turn on Wi-Fi and Bluetooth. Then, open "System Settings" on your Mac, go to "Displays," click the add button, and select your iPad. The iPad will now function as a high-quality second monitor with virtually no latency. This works over both wireless and cable connections.

For Windows Users or Older iPads That Do Not Support Sidecar

If you are using a Windows PC or an older iPad that doesn't support Sidecar (such as iOS 12 or earlier), you will need a third-party app. Here are some highly recommended free options.

Spacedesk

This is a highly popular free app for Windows. You install a server driver on your PC and the Spacedesk app on your iPad. As long as both devices are connected to the same Wi-Fi network, you can turn your iPad into a wireless monitor. It is fully free and feature-rich, though you may experience slight screen lag or compression artifacts depending on your Wi-Fi quality. It is perfectly practical for viewing documents or displaying chat applications.

Yam Display Free

This is a Mac-only app that connects via a USB cable. It works even on older combinations of Macs and iPads that don't support Sidecar. While the free version may impose time limits on sessions, it is known for its low latency and smooth performance.

Paid Apps Are Also Worth Considering

If you try a free app and find yourself wanting lower latency, a sharper image, or smooth video playback, paid apps and hardware solutions like "Duet Display" or "Luna Display" are well worth looking into. By leveraging wired connections and proprietary compression algorithms, they deliver a user experience that rivals buying a dedicated portable monitor.

Key Considerations When Using Your iPad as a Sub-Display

• Battery drain:Keeping the screen turned on while continuously transmitting data drains the iPad's battery quickly. For long work sessions, we recommend connecting the iPad to your computer via a cable to keep it charged.
• Using a stand:To place the tablet comfortably next to your computer screen, a stable tablet stand is essential. A simple, inexpensive stand is more than enough, so make sure you have one ready.

Even outdated devices can find a second life with a little creativity. Dust off the iPad sitting in your closet and upgrade your workspace today!