extraDisp: Second Monitor PC

extraDisp turns your Android tablet or phone into a second monitor for your Windows 10 or 11 PC or laptop. Stream your desktop over Wi-Fi or a USB cable, extend the screen with a virtual display, and use touch as your mouse. One-time purchase: no subscription, no ads, no account.

★ EXTEND OR MIRROR YOUR WINDOWS SCREEN
• Extend your desktop: one click in the free Windows server adds a virtual display (1920×1080), so Windows sees your tablet as a real extra monitor. No HDMI dummy plug needed.
• Or mirror any existing monitor to your tablet or phone.
• Pick which monitor to stream and set the resolution.

★ WIRELESS (WI-FI) OR WIRED (USB)
• Wi-Fi display: the app finds the PC on your network automatically, or type the PC's address.
• USB display: lower latency and a steadier picture over a cable (uses USB debugging and ADB). The PC wakes your device and opens the app for you.
• Auto-reconnect and a background service that reconnects after a reboot.

★ TOUCH CONTROL
• Tap = left click, drag = click-and-drag, swipe = scroll wheel.

★ ADJUSTABLE PERFORMANCE
• Image quality 10–100% and frame rate 1–60 fps, right from the tablet.
• Connect several devices at once (they show the same screen).

★ PRIVATE BY DESIGN
• Streams only on your local network or USB cable, never over the internet.
• No account, no ads, no data collected (see Data safety).

HOW TO USE YOUR TABLET AS A SECOND MONITOR
1. On your Windows PC, download the free extraDisp Server from extradisp.yossoft.com and run it.
2. Optional: click "Setup Virtual Display" to extend your desktop instead of mirroring it.
3. Open extraDisp on your Android tablet or phone on the same Wi-Fi, or plug in a USB cable.
4. Drag windows onto your new extra screen.

GREAT FOR
• A portable monitor for your laptop when you travel or work from a café
• Slack, Teams, Discord or email on a side screen
• Reference docs, notes or a calendar while you code or write
• System monitoring and trading dashboards
• Video calls or videos on a second screen
• Giving an old Android tablet a new job

REQUIREMENTS
• Windows 10 (version 1809 or later) or Windows 11, 64-bit, running the free extraDisp Server
• Android 8.0 or later (phone or tablet)
• Same Wi-Fi network, or a USB cable with USB debugging enabled

FAQ
Is it a mirror or a real extended display?
Both. Choose the virtual display to extend your desktop, or choose an existing monitor to mirror it.

Do I need to buy anything for the PC?
No. The Windows server is free. You pay once for this Android app.

Does it work over the internet, or with Mac, Linux or ChromeOS?
No. extraDisp works on a local Wi-Fi network or USB, with Windows PCs only.

Is it good for gaming?
It is built for work and productivity apps. Fast-paced games are not recommended.

Full setup guide and troubleshooting: extradisp.yossoft.com
Support: yossioknin@gmail.com

extraDisp is made by LutraApps.