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Duotop for Mac

The Mac half of Duotop.

A small menu bar app. It creates the display that fits your device, streams it, and passes your taps and keys to your apps. It is free.

Download for MacRead the help

Version 1.2, 3.0 MB. Requires macOS 26 or later. Signed with an Apple Developer ID and notarized by Apple. It updates itself automatically. What changed. The iPhone and iPad app is on the App Store.

Set it up

  1. Open DuotopMove Duotop to your Applications folder and open it. Its icon appears in the menu bar; there is no Dock icon and no window to keep open.
  2. Allow two permissionsDuotop walks you through both in System Settings › Privacy & Security. Screen Recording lets it send this Mac's picture and sound; only devices you pair can see it. Accessibility lets your taps, trackpad and keys reach the apps on this Mac.
  3. Pair your iPhone or iPadOpen Duotop on your device. Your Mac appears there when both are on the same Wi-Fi. On the Mac, choose Pair a Device and type the six digits it shows into your device.
  4. Choose how the Mac shows upUnder Mac Display in the iPhone or iPad app's Settings: Whole Mac Here (the default) mirrors your Mac's screens onto the fitted display, so every window is on your device. Second Display puts the fitted display beside your Mac's own screen.

Good to know

  • Requires macOS 26. Your iPhone or iPad needs iOS 26 or iPadOS 26.
  • Why it is not on the Mac App Store. Making a display in the exact shape of your device uses a part of macOS that Mac App Store apps may not use, so Duotop for Mac is distributed directly.
  • macOS will remind you about screen capture. From time to time macOS shows its own prompt about an app that can record the screen. That is expected; choose to keep allowing Duotop.
  • Reach from anywhere. This switch in Duotop's menu is on by default. It keeps one idle connection to Duotop's relay so that your own devices can find this Mac from another network (opening it from there needs Pro). The relay only passes encrypted data it cannot read. Turn the switch off and the Mac makes no connection to the relay; Tailscale or a typed address still connect directly. See Privacy.
  • Agent tools are off by default. Turn them on from the menu bar if you want an agent to use this Mac. The endpoint is http://127.0.0.1:47911/mcp and only answers on the Mac itself. See Help.