Decky for Mac and Windows
More than just a second screen.
Decky turns an Android tablet or phone, or another computer, into a real monitor for your Mac or PC. Work on a tablet with your fingers or a pen, and borrow its camera and microphone. Share one screen with a whole room, and move between your computers with Decky Link.
For macOS 14.0 or later and Windows 11 (x64). No account, no subscription.
What Decky is
Your computer sees a monitor.
A tablet, a phone or another computer becomes a display your computer genuinely has. More than one of them can be doing it at the same time. App windows live on them the way they live on any other screen, and what those devices can do then travels the other way.
A monitor your computer actually has
It appears in your display settings beside the screens you already have and takes a place in the arrangement. The cable carries one of them and the rest arrive over Wi-Fi, each a screen of its own at its own size and its own way up. On a Mac, Spaces work on it, and a window you leave there is still there when the device comes back. You work on it.
A picture you hand out
A Room changes nothing about your display setup. One screen goes out to every device that joins, all at once. Viewers watch, and drive it only if you let them. You present with it.
Back into the computer
The device hands its own hardware over, and the computer treats it as its own.
Five apps
The right app for each device
How it is built
Decky just works.
It comes back the way you left it
Every display keeps a stable identity and its settings belong to the device, so a tablet that reconnects is a screen your computer already knows. On a Mac, your windows are still on it and arrangements are remembered per desk. Otherwise the first thing you do each morning is lay the desk out again.
Install the app, then plug in or go wireless
Decky Display runs on an Android tablet or a phone. One device connects over the cable, the rest join over Wi-Fi, and both at once is the ordinary case: the cable for the screen you work at, Wi-Fi for the ones around it. A cable needs no network at all and charges the device while it works. Wi-Fi needs no cable and puts the device anywhere in the room.
Your computer’s controls, from the tablet
Mission Control and Spotlight on a Mac, Task view and Search on Windows, the media keys and the switch between Extend, Mirror and Alone, from a panel on the device. On a Mac, sending the keystroke is not enough for most of them: a system shortcut fires only while something is still bound to it, and the window server checks that a modifier was genuinely held, so Decky asks the Dock for Mission Control directly. A remote that can only type cannot open anything.
Your keyboard stays your keyboard
Characters travel as characters, so the tablet keeps its own layout, dead keys, autocorrect and emoji. A ü arrives as a ü instead of whatever an American layout has on that key. Focus a field and the computer finds the caret itself and lifts the picture clear of the on-screen keyboard.
To the app, the pen is a pen
Pressure, tilt, eraser and hover arrive as genuine pen events, tablet events on a Mac and Windows Ink on a PC, which is what drawing apps such as Photoshop are already listening for. A click with a pressure number attached leaves the brush inferring weight from speed. That is what a stroke tapering in the wrong place looks like.
No account, no server, nothing to sign in to
The computer and the device talk over your cable or your own network. Nothing to register, no password to forget, and no service that can be down on the morning you need a screen. It works on a plane and on a locked-down office network, and there is nothing about it that can be switched off from somewhere else. Most of these want an account before they show you anything.
How to start
Three steps, and the third is the only one you repeat.
Connect
Plug in a cable, or let the tablet find your computer on the network. Both carry everything, including the first pairing. A connected cable takes priority, and it charges the device while it works.
Pair once
The computer shows eight digits to type on the device, and you confirm them on the computer. On a Mac, plugging in skips the code: the Mac asks, and you press Pair. Either way it happens once, and from then on the device is known, trusted and remembered across restarts.
Use as display
The device becomes a monitor your computer genuinely has, listed in its display settings with the rest. Then choose what it does: Extend for more desk, Mirror to copy a screen you already have, or Alone to make it the only one. The mode is named the same on both ends.
Everything Decky does
Take the tour.
26 features, grouped by what they do. The ones marked On a Mac need Decky on a Mac.
Picture and sound
Keyboard, pointer and touch
What the device hands over
How sharp it looks
Pricing
Buy it once. Own it outright.
Try everything free for 14 days. No card needed. Then keep the free version or buy once for two computers, Mac or Windows, with no expiry and full offline use.
Free version
Free
no time limit
Useful on its own, and it does not expire.
14-day full-access trial included. No card needed.
Full version
€59€99
one-time
or $69, normally $109
One-time purchase.
Limited-time promotion: €40 off the usual €99.
The purchase is for Decky on the computer that shares its screen, Mac or Windows. Decky Display is free, including for Room guests.
Prices exclude VAT where applicable. Paid through a merchant of record.
Two ways to start
Start with the free download and request a guest pass in Decky for 14 days of full access. Or enter a purchased licence key to keep full access.
Bought already?
Paste your key and everything unlocks.
Want to try first?
14 days of everything, free. No card needed.
After the 14-day trial you can purchase a licence to keep everything. Or do nothing, and carry on with the free version.
| Feature | Free | Full version |
|---|---|---|
| Resolution and refresh | 1920 × 1080 at 30 Hz | Native resolution, up to 120 Hz |
| Connection | Wi-Fi | Direct USB and Wi-Fi |
| Spare desktops | Unlimited, any resolution | Unlimited, any resolution |
| Second monitor | Included | Included |
| Classic touch and the screen’s keyboard | Included | Included |
| A keyboard and mouse on the device, driving the computer | Included | Included |
| Watching a shared screen | Included | Included |
| Multiple Decky Displays | Not included | Included |
| Natural touch and your computer’s gestures | Not included | Included |
| Controller · Keyboard & touchpad, including screen linking | Not included | Included |
| Starting a Room | Not included | Included |
| Using a device as an audio output | Not included | Included |
| Using a device as a webcam | Not included | Included |
| Using a device as a microphoneOn a MacComing to Windows as a free update | Not included | Included |
| Pen pressure, tilt and eraser | Not included | Included |
| Computer controls on the device | Not included | Included |
| Device profiles, and saved arrangements on a Mac | Not included | Included |
Just a purchase, checked once and never again
Entering your key checks it once with the licence service, which registers that computer. After that Decky never asks again and keeps working with no network at all.
One licence covers two computers, Mac or Windows.
Lost your key? Have it sent again
Questions
The things people actually ask.
No. One purchase, two computers, paid once. The licence does not expire, and the version you bought keeps working.