Decky for macOS
More from your Mac. More from your devices.
Turn an Android tablet, phone or another Mac into a second monitor. Work directly with Natural touch, or use an Android phone or tablet as a Controller with a keyboard and touchpad. Add a pen, camera, microphone and shared screens to build a workspace from the devices you already own.
macOS 14.0 or later. No account, no subscription.
What Decky is
The Mac sees a monitor.
A tablet, a phone or another Mac becomes a display macOS genuinely has. More than one of them can be doing it at the same time. 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 macOS actually has
It appears in System Settings beside the screens you already have, it takes a place in the arrangement, and Spaces work on it. 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. Leave a window there and it 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 tablet, phone and laptop at once. Viewers watch, and drive it only if you let them. You present with it.
Back into the Mac
The device hands its own hardware over, and the Mac treats it as its own.
Four 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, so a tablet that reconnects is the screen macOS already knows and your windows are still on it. Arrangements are remembered per desk, and settings belong to the device. 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 comes from Google Play and 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.
The Mac itself, from the tablet
Mission Control, Spotlight, the Apple menu, the media keys and the switch between Extend, Mirror and Alone, from a panel on the device. 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 instead. 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 Mac 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 through a virtual trackpad as genuine tablet events, which is what Photoshop and Procreate 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 Mac 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 Mac 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
Plugged in there is no code to read: the Mac asks, and you press Pair. Over Wi-Fi it shows eight digits to type on the device. 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 macOS genuinely has, listed in System 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.
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 Macs, 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 host Mac. 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 tablet, driving the Mac | Included | Included |
| Watching a shared screen | Included | Included |
| Multiple Decky Displays | Not included | Included |
| Natural touch and Mac 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 microphone | Not included | Included |
| Pen pressure, tilt and eraser | Not included | Included |
| Mac Controls on the tablet | Not included | Included |
| Saved arrangements and device profiles | Not included | Included |
Just a purchase, checked once and never again
Entering your key checks it once with the licence service, which registers that Mac. After that Decky never asks again and keeps working with no network at all.
One licence covers two Macs.
Lost your key? Have it sent again
Questions
The things people actually ask.
No. One purchase, two Macs, paid once. The licence does not expire, and the version you bought keeps working.