Leave the trackpad alone.
Hands covered in flour? Sitting across the room? Cenno lets you run your Mac with simple hand gestures, right from the built-in camera.
Your webcam already knows how.
Move the cursor
Your hand drives the pointer in real time, tracked by the built-in camera with low latency.
Switch Spaces
Swipe left or right in the air to move between desktops, the same as a trackpad swipe.
Click and drag
Pinch thumb and index while pointing to click. Pinch twice to double-click, hold to drag.
Works alongside whatever you already use: dictation apps, launchers, window managers.
Control at your fingertips.
Master your Mac without touching the keyboard. 12 air gestures mapped to the actions you use every day.
Mission Control
Swipe up with an open hand to see every window and Space at once.
Switch Spaces
Swipe left or right with an open hand to move between desktops.
Scroll
Two fingers up or down. Flick to glide.
Back and forward
Swipe two fingers sideways.
Move the cursor
Point with your index finger.
Click
Pinch while pointing. Twice to double-click, hold to drag.
Volume
Make an OK sign and twist it like a dial.
Play and pause
Hold a thumbs up.
Spotlight
Open your hand, then gather your fingertips.
Dictation
Hang loose to start or stop your dictation app.
Undo
Thumbs down removes what you just dictated.
App windows
Swipe down with an open hand to see the windows of the current app. Swipe down again to close.
Pause Cenno
Rock horns to pause or resume all gestures.
The camera feed never leaves your Mac.
A tool that watches your hands should earn your trust. Cenno runs entirely on device. There is no server to send anything to.
- Data collectionnone
- Cloud processingnone
- Ads or trackingnone
- Bytes of video sent off your Mac0
- Pricefree
Get Cenno
Latest build on GitHub Releases. Version 0.1.0. Requires an Apple Silicon Mac with macOS 12 or later, and a webcam.
If Cenno earns a place in your day, you can buy me a coffee.
Set up in a few minutes
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Install it
Open the file you downloaded and drag Cenno into your Applications folder.
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Open it
The first time, your Mac will stop it. Go to System Settings › Privacy & Security, scroll down and click Open Anyway. You only do this once.
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Allow the camera
Click Allow when Cenno asks for your camera. The video never leaves your Mac.
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Let it control your Mac
In System Settings › Privacy & Security › Accessibility, switch Cenno on, then open it again.
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Check your shortcuts
In System Settings › Keyboard › Keyboard Shortcuts › Mission Control, make sure the Spaces, Mission Control and Application windows shortcuts are on. They usually already are.
Questions, answered.
What is Cenno?
Cenno is a macOS app that lets you control your Mac with hand gestures, using the built-in webcam. You can move the cursor, click, scroll, switch Spaces, open Mission Control, change the volume and more without touching the trackpad.
Is Cenno free?
Yes. Cenno is free, with no account and no ads. If you find it useful you can support it through Ko-fi.
Does Cenno send my camera feed anywhere?
No. Cenno runs entirely on your Mac. There is no server, no cloud processing and no data collection, so the video never leaves your computer.
Which Macs does Cenno support?
Cenno needs an Apple Silicon Mac with macOS 12 or later and a webcam. A Windows version is planned.
Why does macOS block Cenno the first time I open it?
Cenno is not signed with an Apple Developer ID yet. Open System Settings, go to Privacy & Security, scroll down and click Open Anyway. You only need to do this once.
Does Cenno work with my dictation app?
Yes. The hang loose gesture toggles dictation in Wispr Flow, Apple Dictation or a custom shortcut, and a thumbs down removes what you just dictated.
You decide what comes next.
Cenno is early. The gestures, apps and features it supports next come from the people using it. Try it, then tell me what's missing.
Know someone who'd use this?
Send them the link. Every new user makes the next version better.