FlankScreenSecond monitor for Windows
Your spare tablet is a second screen
FlankScreen turns an iPad, Android tablet, phone or old laptop into a wireless second monitor for your Windows PC. Keep a guide, chat or stream on the side while you play — nothing to install on the device.
Windows 10 and 11 · 7 days free, no account, no card
A real extra monitor, not a mirror
Windows sees FlankScreen as one more display. Drag any window onto it, just like a second monitor on your desk.
Just a browser
Open a link or scan a QR code on the device. No app to install on the tablet or phone.
Low latency
Hardware video encoding on your PC and a direct connection over your home Wi-Fi. Typically 40–60 ms on home Wi-Fi.
Touch works
Tap to click, drag, long-press for right click, scroll with two fingers. Laptops can use their own mouse and touchpad.
Fits the device
The virtual display picks a resolution that matches the device's screen, so there are no black bars.
Only your devices
A new device has to be approved on the PC with a matching code. The video stream is encrypted.
Light when idle
Nothing is sent while the screen stands still, so it saves Wi-Fi and the device's battery.
How it works
Three steps, about a minute the first time.
Start FlankScreen
On first start it installs a signed virtual display driver (Windows asks for administrator rights once).
Open the link
Scan the QR code or type the address on your tablet or phone. Both devices must be on the same Wi-Fi.
Use it
The device shows the new display. Move windows onto it from your PC.
Pricing
Try it free for 7 days. If it works for you, buy it once — no subscription.
- Personal license, works on up to 5 of your computers
- License key right after payment, also by e-mail
- Refund possible within 14 days of purchase
During the trial the device screen shows a small “Trial” mark. Payment is handled by Stripe.
Requirements
PC
- Windows 10 or 11, 64-bit
- A graphics card with a hardware H.264 encoder is recommended (otherwise the processor encodes)
- Administrator rights once, to install the display driver
Second screen
- Any device with a modern browser: iPad, iPhone, Android tablet or phone, another laptop
- The same Wi-Fi or local network as the PC
- No internet connection needed while you use it
FAQ
What does the display driver do?
To create a second display, Windows needs a display driver. FlankScreen uses the open-source Virtual Display Driver, signed by SignPath Foundation. It runs in user mode, like a regular program, and is removed when you uninstall FlankScreen.
Does it work with iPhone and iPad?
Yes. FlankScreen runs in the browser on iPhone and iPad, so there is nothing to install from the App Store.
Can several devices connect at once?
Yes. They all show the same extra display; its resolution follows the device that connected first.
Does it send my screen to the internet?
No. The picture goes directly from your PC to your device inside your local network. FlankScreen has no accounts, and your screen never passes through any server.
What does FlankScreen send over the internet?
Only the license check. After you enter a license key, the program sends the key, the program version and a random installation number (it says nothing about your computer) to license.flankscreen.com — once when you enter the key and then about once a week, only if the PC is online. Nothing else: no telemetry, no analytics. For a purchase we keep the license key, its status and the e-mail address you gave at checkout, to send you the key and help you if you lose it. The website itself uses no cookies and no trackers. Questions: support@flankscreen.com.
What happens after the 7-day trial?
The stream no longer starts until you enter a license key. Your settings and allowed devices stay as they are.
Can I get a refund?
Yes, within 14 days of purchase: write to support@flankscreen.com. After a refund the license key stops working.
Which languages are supported?
English, German, Spanish, Polish and Russian.