Slap detection
Reads the motion sensor in real time and triggers instantly when you tap the chassis.
A tiny menu bar app that taps into your MacBook's built-in Sudden Motion Sensor and turns every slap into a sound. No setup, no accounts. 100% free.
Free · Apple Silicon
Features
Everything Slap Mac does — and nothing it doesn't.
Reads the motion sensor in real time and triggers instantly when you tap the chassis.
Choose from a curated library of slap sounds, drums and effects. New packs added regularly.
Dial in exactly how hard you need to slap. Avoid false triggers from typing or scrolling.
Always one click away. No dock icon, no clutter, almost zero CPU when idle.
How it works
From download to slapping in a minute — including macOS security.
Grab the app from this page and open the disk image.
macOS may block the first launch. Open System Settings → Privacy & Security, scroll down, and click Open Anyway next to the message about Slap Mac.
Open Slap Mac once and grant motion sensor access in System Settings when prompted.
Tap the chassis. The app reacts instantly with the sound you picked.