You don't need a wand to cast a spell.
Point to move the cursor, pinch to click, two fingers to scroll, sweep to change screens. Stay where you are.
Cenno runs on Mac and Windows. Open cennoapp.com on your computer to download it.
Point, pinch, swipe.
Move the cursor
Your hand drives the pointer in real time, tracked through the camera with low latency.
Click and drag
Pinch thumb and index while pointing to click. Pinch twice to double-click, hold to drag.
Switch Spaces
Swipe left or right with an open hand to move between desktops.
Cenno works alongside whatever you already use: dictation apps, launchers, window managers.
Every action, one spell away.
Fourteen spells mapped to the actions you already use every day.
Reach
Move the cursor. Point sideways with your index finger.
Pinch
Click, double-click or drag. Pinch thumb and index while pointing.
Flick
Scroll, with momentum. Two fingers up or down.
Sweep
Go back or forward. Two fingers swipe left or right.
Turn
Previous or next Space. Open hand swipe left or right.
Open
See every window and Space at once. Swipe up with an open hand.
Fold
Show the app windows, then close them. Swipe down with an open hand.
Twist
Change the volume. Make an OK sign and twist.
Raise
Play or pause. Hold a thumbs up.
Gather
Open Spotlight. Open your hand, then gather your fingertips.
Loose
Turn dictation on or off. Hold a hang loose hand.
Reject
Undo what you just dictated. Hold a thumbs down.
Horns
Pause or resume every spell. Hold the rock horns sign for a second.
Farewell
Lock the screen. Wave an open hand side to side.
The camera feed never leaves your computer.
A tool that watches your hands should earn your trust. Cenno runs entirely on your computer. There is no server to send anything to.
- Data collectionnone
- Cloud processingnone
- Ads or trackingnone
- Bytes of video sent off your computer0
- Pricefree
Get Cenno
Version 0.3.0. Requires an Apple Silicon Mac with macOS 12 or later, and a camera.Needs Windows 10 or later.Cenno runs on macOS and Windows.
Send yourself the link, then download Cenno on your Mac or Windows PC.
If Cenno earns a place in your day, you can buy me a coffee.
Cenno for Windows
It installs for your own account, needs no extra software, and asks for the camera only. Cenno is an experimental tool in its early days, so your browser and Windows don’t recognise it yet and warn you the first time. Nothing is wrong with the file. Here is what to click.
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If your browser blocks the download
Cenno-Setup.exe isn’t commonly downloaded
In Edge, point at the download, click the … button, then Keep, Show more and Keep anyway. In Chrome, click Keep.
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When Windows stops the installer
Windows protected your PC
This blue screen is Microsoft SmartScreen. Click More info, then Run anyway. You only do this once.
Set up on macOS
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Install it
Open the DMG you downloaded and drag Cenno into your Applications folder.
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Open it
The first time, macOS won’t open it. Click Done, then go to System Settings › Privacy & Security and click Open Anyway. More on this.
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Allow the camera
Click Allow when Cenno asks for your camera. The video never leaves your computer.
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Let it control your computer
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 desktop app that lets you control your computer with your hands. Every action has a spell: point to move the cursor, pinch to click, swipe to change screens, open Mission Control, change the volume.
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 computer. There is no server, no cloud processing and no data collection, so the video never leaves your computer.
Which computers does Cenno support?
Cenno needs an Apple Silicon Mac with macOS 12 or later and a camera. On Windows it needs Windows 10 or later, and there is a build for it.
Why does macOS block Cenno the first time I open it?
Cenno is an early, experimental release that macOS doesn’t recognise yet, so it asks you to confirm before opening it. Click Done, open System Settings, go to Privacy & Security, scroll down and click Open Anyway. You only need to do this once. If macOS says the app is damaged, there is a fix for that too.
Does Cenno work with my dictation app?
Yes. The hang loose spell 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 spells, 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.