Lock the keys. Love the cat. Cats Lock is a one-click keyboard lock for Mac, for any time you need the keys to stop for a moment. A cat on the laptop, a toddler reaching for the keyboard, or a screen that needs a wipe-down: hit the lock and carry on, without random typing, deleted documents, or a trip to System Settings. ONE SHORTCUT, ANY APP Press ⌘L from anywhere and Cats Lock instantly blocks every key. A customizable lock screen shows what's happening; the same shortcut releases it when you're ready. Prefer a different combo? Record your own in Settings. SMART DETECT Turn on Smart Detect and Cats Lock can lock itself the moment it senses keyboard chaos, so you don't have to reach for the shortcut. It runs entirely on your Mac, and you choose how sensitive it is. It stays off until you turn it on, and asks for Accessibility once when you do. CUSTOMIZE YOUR CAT Customize your cat's coat, muzzle, socks, markings, bowtie, name, and just the right amount of chonk. They then appear on the lock screen too. KEEP YOUR MAC AWAKE FOR LONG JOBS Got a long render, export, build, or backup running? Lock the keyboard and turn on Keep Mac Awake so a stray paw, or a sleeping screen, can't interrupt it. Come back hours later to find everything still running. STEALTH LOCK FOR MEETINGS AND MOVIES When your sidekick is encroaching, flip on Stealth Lock from the menu bar or Settings. Same keyboard blocking, no overlay, no sound. Need to take control during a meeting or screen share? Unlock just the trackpad and keep clicking while the keyboard stays locked. LOCK THE FUNCTION ROW (OPTIONAL) Got a cat that loves the top row? Optionally block the function keys too (F1 through F12), including Mission Control, brightness, volume, and media keys. It needs Accessibility permission and stays off until you turn it on. LOCK THE BUILT-IN KEYBOARD Working on an external keyboard? Lock your MacBook's built-in keyboard and let your cat sprawl out on the warm keys while you keep working. It releases the moment you unplug the external keyboard, so you're never stranded. Like the function row, this needs Accessibility permission and stays off until you turn it on. MAKE THE LOCK SCREEN YOURS Pick a background style, choose an icon or emoji, add a custom message, or set a favorite photo as the backdrop. PICK YOUR DETERRENT Choose from a range of built-in sounds, including a spoken "Warning, cat on keyboard" voice, or import your own. Sounds play on each blocked keystroke, or stay completely silent. LOCK PROFILES Save your go-to lock setups as profiles, each with its own mode, sounds, and lock screen, then start any of them straight from the menu bar. LIVES IN THE MENU BAR Cats Lock stays out of your way. Always one click from the menu bar pawprint, with a one-tap widget to lock or unlock without opening the app. Optional Hide from Dock and Launch at Login. Auto-unlocks when your screen goes to sleep so you're never locked out of your own Mac. SPEAKS YOUR LANGUAGE Fully localized in English, German, Spanish, French, Indonesian, Italian, and Japanese. PRIVACY-FIRST Cats Lock runs entirely on your Mac. No accounts, no cloud, no analytics, no data ever leaves your device. The app is fully sandboxed. The core lock needs no special permissions. The optional function-row, built-in keyboard, and Smart Detect features are the only ones that ever ask for Accessibility, and only if you choose to turn them on. When you turn one of those on, Cats Lock uses the permission only to block keys. It never reads what you type, and it never saves or sends anything. Smart Detect works entirely on your Mac and never uses Input Monitoring. DESIGNED FOR CAT PEOPLE, LOVED BY MANY MORE Made by a cat owner who got tired of his cat rewriting documents in real time, then shaped by feedback from parents, keyboard cleaners, and everyone who needs the keys to hold still. REQUIREMENTS macOS 13.1 (Ventura) or later. Apple Silicon and Intel Macs supported.