Free Ways to Use iPad as Second Monitor for PC

Updated 6 November 2026 · Standard formula, shown below

You can use an iPad as a second monitor for a PC for free using built-in Windows features or third-party apps with free tiers, such as SpaceDesk or Duet Display’s free version. This guide covers the most reliable free methods, setup steps, and troubleshooting for both wired and wireless connections.

Background: Why Use an iPad as a Second Monitor?

Many PC users have an iPad sitting idle and want extra screen space for productivity, coding, or monitoring dashboards. While Apple’s Sidecar works only with Macs, Windows users need alternative solutions. Free options exist, but they vary in latency, resolution, and ease of setup. Understanding the underlying technology helps you choose the right method.

How It Works: Protocols and Connections

All second-monitor apps work by sending video data from your PC to the iPad over a network or USB cable. The two main approaches are:

Wireless (Wi-Fi): Uses your local network. Convenient but adds latency, especially on congested networks.
Wired (USB): Uses a Lightning or USB-C cable. More stable and lower latency, but requires a cable and sometimes a paid app.

Most free apps use the Wi-Fi approach. The iPad receives a compressed video stream and sends back touch input (if supported). For best performance, use a 5GHz Wi-Fi router and keep the iPad close to it.

Free Methods: Step-by-Step

1. Windows Built-in Wireless Display (Miracast)

Windows 10 and 11 include a feature called “Wireless Display” that can project to Miracast receivers. However, iPads do not natively support Miracast, so this method requires a third-party receiver app on the iPad. One free option is the “Miracast Receiver” app (availability varies by region). Steps:

Install a Miracast receiver app on your iPad from the App Store.
On your PC, press Win + K to open the Cast menu.
Select your iPad from the list of available devices.
Choose “Extend” or “Duplicate” as the display mode.

This method is free but often has noticeable lag and may not support touch input.

2. SpaceDesk (Free)

SpaceDesk is a popular free app that turns an iPad into a second monitor over Wi-Fi or USB. It works with Windows 10/11 and offers low latency on local networks. Setup:

Download and install the SpaceDesk server on your Windows PC from the official website.
Install the SpaceDesk app on your iPad from the App Store.
Open both apps. The iPad should automatically detect the PC on the same network.
If not, enter the PC’s IP address in the iPad app.
Once connected, go to Windows Display Settings and arrange your monitors.

SpaceDesk supports touch input and multiple monitors. The free version includes ads and a watermark, but it’s fully functional.

3. Duet Display (Free Tier)

Duet Display is a paid app, but it offers a free trial that can be used indefinitely with limited features (e.g., lower resolution and no wireless mode). You can use it via USB cable:

Install Duet Display on your PC and iPad.
Connect the iPad to the PC using a compatible USB cable.
Open Duet on both devices. The iPad will act as a second monitor.

The free trial limits you to 1080p and lacks wireless support, but it’s a reliable wired option.

4. Splashtop Wired XDisplay (Free)

Splashtop offers a free app called Wired XDisplay that works over USB. It’s straightforward:

Install Splashtop Wired XDisplay on your PC and iPad.
Connect via USB cable.
Launch the app on both devices.

It supports touch and pen input on iPad Pro models. The free version has no time limit.

Choosing the Right Free Method

Your choice depends on your needs:

Lowest latency: Use a wired method (Duet trial or Splashtop).
Wireless convenience: SpaceDesk is the best free wireless option.
Touch input: SpaceDesk and Splashtop support touch; Miracast receivers often don’t.
Multiple monitors: SpaceDesk supports multiple iPads.

For most users, SpaceDesk offers the best balance of features and cost. If you need minimal lag for drawing or gaming, consider a wired option.

Common Problems and Fixes

iPad Not Detected

Ensure both devices are on the same Wi-Fi network (or connected via USB).
Check firewall settings on Windows; allow the app through the firewall.
Restart both apps and devices.

Lag or Low Quality

Use a 5GHz Wi-Fi network instead of 2.4GHz.
Close bandwidth-heavy apps on your PC.
Reduce the resolution in the app settings.
Switch to a wired connection if possible.

Touch Input Not Working

Check the app’s settings; some apps require enabling touch input.
Ensure your iPad model supports the feature (most do).

Comparisons: Free vs Paid vs Native

Apple’s Sidecar is the gold standard for Mac users, offering seamless integration and low latency. For Windows, paid apps like Duet Display (full version) and Luna Display offer better performance and additional features like wireless and high refresh rates. Free options are sufficient for static content, web browsing, or document editing, but may struggle with video playback or gaming due to latency.

Safety and Security Considerations

When using third-party apps, be aware of data privacy. Free apps may collect usage data or show ads. Always download from official sources (App Store, developer websites). Avoid granting unnecessary permissions. For sensitive work, consider using a wired connection to reduce network exposure.

Frequently Asked Questions

Can I use my iPad as a second monitor for free without any apps?

No, Windows does not natively support AirPlay or Sidecar. You need a third-party app to act as a receiver on the iPad.

Does SpaceDesk work with iPad?

Yes, SpaceDesk has an iOS app that works with Windows PCs. It supports both Wi-Fi and USB connections.

Is there a free trial for Duet Display?

Duet Display offers a free trial that includes basic wired functionality. After the trial, it becomes a paid subscription, but the free version may still work with limitations.

Why is my iPad not showing up in Windows display settings?

Make sure the app is running on both devices and the connection is established. In Windows, press Win + P and select “Extend” to see the second monitor.

Can I use my iPad as a touchscreen monitor for my PC?

Yes, apps like SpaceDesk and Splashtop support touch input, allowing you to interact with your PC using the iPad’s touchscreen.

Will using my iPad as a second monitor drain its battery quickly?

Yes, especially when using wireless connections. Keep it plugged in during extended use to avoid battery drain.

Method: the standard formula for this calculation, rounded as each result states. See how the calculators work or report an error.