DuoBook Host for Mac

The free menu-bar app that lets DuoBook on your iPhone show your Mac’s screen and type and click on it.

Version 1.1 · macOS 14 Sonoma or later · Apple silicon and Intel · Signed and notarized by Apple · Updates itself

Install

1. Open the downloaded file and drag DuoBook Host to Applications.
2. Open it from Applications. Its icon appears in the menu bar.
3. Its setup window has an Allow button for Screen Recording and one for Accessibility; each opens the right page in System Settings.
4. Turn on Open at login so it’s always ready.
5. Want to use your Mac away from home? Turn on Access from anywhere.

New in 1.1

• Unlock from iPhone: when your Mac is locked, your iPhone shows its lock screen, so you can type your password, even from far away. Connecting wakes a sleeping screen.
• Updates itself: DuoBook Host offers new versions and installs them with one click, or choose Check for Updates… in its menu.
• Easier setup: a window with an Allow button for each permission and a checkmark as each one turns on.
• Keep Mac awake: Never, When plugged in, or Always. Keep the lid open: closing it still puts the Mac to sleep.
• All Displays: with more than one display, see them all side by side on your iPhone.
• Router help: if your router keeps DuoBook out when you’re away, DuoBook Host opens its settings and the guide.
• With the DuoBook 1.1 beta on your iPhone: the Touch Bar, up to 120 fps, a smooth pointer, and keys in your Mac’s language.

Why it needs these permissions

• Screen Recording sends your screen to your iPhone, only while it’s connected.
• Accessibility lets it type and click for you.
• Local Network lets your iPhone find it on Wi-Fi.

Nothing is sent anywhere else. See the privacy policy.