Hey Product Hunt! I'm Michael, an indie developer from Ukraine. The problem: macOS still can't lock a single app. Screen Time, Fast User Switching, FileVault — none of them let you hand your Mac to someone for a minute without also handing over every open app. Apple's own support page says it plainly: "It is not possible to lock apps individually." That's still true in 2026, two macOS releases after iOS got exactly this with iOS 18. Every "app locker" I tried (AppLocker, MakLock, Cisdem AppCrypt...) works the same way: they draw an overlay on top of the still-running app. The content is technically still there behind the curtain, and some can be bypassed just by force-quitting or switching desktops. So I built Shoo! differently: when you lock an app, it actually terminates the process. Nothing is running, so there's nothing to peek at, and it re-locks automatically the next time someone tries to open it — Touch ID, Apple Watch, or a backup password. - One-time $17.99, no subscription - 7-day full trial, no credit card - Zero extra permissions — no Accessibility, no Automation, no camera access - 11 languages, offline license check Would genuinely love to know: what's the one app on your Mac you'd want locked first? And if you've tried other Mac app lockers — what broke for you?

Shoo!

Lock any Mac app behind Touch ID — for real

Lock any Mac app behind Touch ID — for real