Use your phone or tablet as an extra monitor

Duet Display is a freemium app that converts a smartphone or tablet into an additional display for your computer. It works with a wide range of devices and is designed to give you more screen area so you can run multiple programs side by side, keep reference material visible, or monitor live data without constantly switching windows.

Top alternative: VDrift (free) — if you’re exploring other options, this free title is often suggested as an alternative.

Getting started: installation and plan options

Installing and connecting Duet is straightforward. After downloading the app you create or sign in to an account, then pair the mobile device to your PC. In most cases the connection is established in seconds.

Available tiers include:

  • Business
  • Pro
  • Studio
  • Air
  • Starter

Some plans provide wireless capability, which is useful for people who move between locations often, while wired setups typically deliver the most consistent performance.

What to watch out for: performance considerations

Although Duet can be very useful, there are trade-offs:

  • Occasional lag and latency, particularly over wireless links, can be disruptive for time-sensitive work like video editing or live demos.
  • Higher CPU demand can cause devices to run hotter and drain batteries faster.
  • Wireless convenience sometimes comes at the expense of responsiveness; for graphics-heavy or real-time tasks a cable connection is recommended.

Optimizing your device settings and preferring a wired connection for demanding workflows will reduce these issues.

Key benefits and creative use cases

Duet’s flexibility is one of its strongest points:

  • Support for both USB and Wi‑Fi connections lets you choose between stability and mobility.
  • Touch input on the mobile device allows gestures and direct interaction with desktop apps.
  • Creative professionals can use a tablet as a pressure-sensitive surface for programs such as Adobe Photoshop or Illustrator, turning the mobile device into a lightweight drawing tablet.

These capabilities help organize workspaces and streamline multitasking, improving efficiency for many everyday and specialized workflows.

Summary assessment

Duet Display is an effective, easy-to-set-up solution for expanding your desktop using a phone or tablet. It offers useful touch features and both wired and wireless connectivity, making it a flexible tool for travelers and creatives alike. Be mindful of potential latency and increased resource use; choosing the proper connection method and tuning device performance will help you get the most benefit from the app. Overall, it’s a practical option for anyone looking to improve multitasking and workspace organization.

Technical

Title
Duet Display
Requirements
  • Windows
  • Mac
Language
No language has been specified.
Available languages
License
  • Free
Latest update
2025-08-04
Author
Kairos

Duet Display for other platforms

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