Duo Screen
Mirror any display
Show the main screen of your Mac, or any other display it uses, scaled to fit. With the trackpad and keys under it, a half-folded Duo works like a small laptop.
- The handleDrag it to give the trackpad more room or less. Double-tap to reset.
- Keyboard and •••The full keyboard, and a menu for the mode, the display, the trackpad’s side and quality.
- Any displayThe main screen of your Mac or one connected to it, picked from the menu.
- TouchTap to click, drag to move, two fingers to scroll, long-press to right-click.
- Keys a touch keyboard lacksesc, tab, arrows and delete. ⌃ ⌥ ⌘ ⇧ stay lit until the next key, so ⌘C takes one thumb.
- TrackpadMove, tap to click, two-finger tap to right-click, two fingers to scroll, hold to drag. Try it.
A display of its own
In Extend, your Mac adds a display sized to the screen you hold, and you drag windows onto it like any monitor. Choose a screen and a text size to see the display your Mac makes.
Your Mac adds a display of 1188 × 836 points, drawn at 2376 × 1672 pixels.
On the Duo’s inner screen, Larger Text makes a display of 950 × 668 points, Default 1188 × 836 and More Space 1426 × 1002: the screen’s own size times 1, 1.25 or 1.5, drawn at twice that in pixels. With the trackpad showing, the display fits the space beside it.
If the phone locks or the Wi‑Fi drops for a moment, your Mac keeps the display for a minute, so windows stay where you put them. Connect an iPhone and an iPad together, and each becomes a display of its own.
Pair once
Open Duo Screen Host on your Mac.
It lives in the menu bar. It asks for Screen Recording to send the screen, and Accessibility if you want your device to work the pointer and keyboard.
Then tap your Mac in Duo Screen.
Your iPhone or iPad finds Macs on the same Wi‑Fi network by itself. If yours doesn’t show up, pair with its address instead.
Check the code, and click Allow.
The same six digits appear on both screens. From then on your Mac is one tap away, and the connection is encrypted with a key only the two of them have. Pairing only ever happens like this, in person, on the same network.
Only your devices can read it
| What | From and to | How | Kept |
|---|---|---|---|
| The picture of your screen | Mac to iPhone or iPad | Encrypted, over your Wi‑Fi | Shown, never saved |
| Taps, trackpad and keys | iPhone or iPad to Mac | Encrypted, over your Wi‑Fi | Never saved |
| Away from home, if you allow it | Straight between your devices, or through our relay when that isn’t possible | Encrypted end to end: the relay can’t read it | Session times, with no IDs or addresses |
| Pairing keys | Between your two devices, once | Agreed after you approve the code | In each device’s keychain |
| Names of paired devices | Between your two devices | Shown when they pair or connect | On your devices only |
| Your settings | Stay on the device | Text size, quality, trackpad | On the device |
| Anything about you | Nowhere | No accounts, no analytics, no tracking | Nothing to keep |
Remote access is off until you turn it on in Duo Screen Host and allow each device. Devices that haven’t been paired can’t connect at all. The whole policy is short: read it.
Questions
Does it need the internet? No. Your Mac and your iPhone or iPad talk to each other over your Wi‑Fi network, or straight over peer‑to‑peer Wi‑Fi, without a server.
Can I use it away from home? Yes, if you turn on Remote access in Duo Screen Host and allow that device. Your device reaches the Mac through our relay, then the two try to connect directly; the relay carries the session only when they can’t. Either way it’s encrypted end to end, so the relay can’t see your screen or what you type. Pairing still happens only at home, on the same network.
Which iPhone and iPad models work? It was designed around the two screens of iPhone Duo, and works on other iPhone models with iOS 26 or later and on iPad with iPadOS 26 or later.
Which Macs? Any Mac with macOS 26 or later, running Duo Screen Host.
Why isn’t the Mac app on the Mac App Store? Making a new display and working the pointer need system features the Mac App Store doesn’t allow. So Duo Screen Host comes from this site, signed and notarized by Apple.
Why does my Mac ask for Screen Recording and Accessibility? Screen Recording lets Duo Screen Host send your screen. Accessibility lets taps and keys from your device work the pointer and keyboard; without it you can still watch. A switch in its menu turns control off at any time.
What happens when my phone locks? Your Mac keeps the extended display for a minute, so windows don’t jump back to the main screen. Unlock, reconnect, and they’re where you left them.
Can I use two devices at once? Yes. Connect an iPhone and an iPad together and each becomes its own display.
Can I use a real keyboard or mouse? On iPad, a connected keyboard, mouse or trackpad works. On iPhone, use the trackpad and keys Duo Screen puts beside the screen, on whichever side you like.
How smooth is the picture? Your Mac encodes it in hardware, as HEVC or H.264, at up to 60 frames per second. Battery Saver runs at 30 to save battery and Wi‑Fi; Sharp spends more of your Wi‑Fi on detail.
Is anything recorded? No. Each frame is shown as it arrives and never saved, on either device.
How do I unpair? Choose Forget This Mac in Duo Screen, or Remove next to the device in Duo Screen Host.
Is it made by Apple? No. Duo Screen is made by Metahuman Network and isn’t affiliated with Apple. iPhone, iPad, Mac and iPhone Duo are trademarks of Apple Inc.
Coming soon, with a free companion for your Mac.
Duo Screen for iPhone and iPad, iOS and iPadOS 26 or later.
Coming soon to the App Store
Duo Screen Host for the Mac. Notarized by Apple and free, for macOS 26 or later.
Coming soon as a free download
To pair, both need to be on the same Wi‑Fi network. Stuck? Support has the fixes for the usual snags.