Slap your MacBook, it yells back.
Free, open-source, and ready to make your Mac scream.
Uses the Apple Silicon accelerometer to detect physical slaps on your MacBook. Not a gimmick button — it reads actual impact force when your hand connects.
Every time you hit the lid, it fires back with a voice clip matched to impact intensity. Light tap? Gentle response. Full-force smack? It lets you know.
Zero latency between your slap and the MacBook's reaction. The moment your hand connects, you hear the response. No delay, no lag — instant audio feedback.
Ships with 77+ sound effects across 4 voice packs. Switch between Pain, Sexy, Halo, Lizard, and more — or load your own custom MP3 sounds for a personalized experience.
The app lives in your menu bar with no dock icon. It lurks silently in the background, waiting for the next smack. Nobody will know it's running until they hear it.
Fine-tune how hard you need to hit the lid before it reacts. Go from earthquake-level detection all the way up to requiring a full-force running slap to trigger a response.
Set a cooldown timer so it doesn't melt down during rapid slap sessions. Prevents sound overlap when you go on a slapping spree.
The app tracks every slap you've ever landed. Your lifetime slap count displays right in the menu bar. How high can you go?
Comes loaded with 77+ sound effects across 4 voice packs. Each mode gives the machine a distinct personality when you slap it. Your open-plan office will have questions.
Click a card to preview how each mode sounds
🎚️ Adjust how SlapMac detects and responds to your slaps
The app runs five concurrent signal processing algorithms that vote on whether you actually slapped your MacBook. It uses the accelerometer built into every Apple Silicon Mac to distinguish real slaps from typing, bumps, or moving your laptop.
Strips out gravity and low-frequency noise so only sharp impacts register. This is why normal typing won't accidentally trigger a sound event.
Compares short-term vs long-term acceleration averages at three timescales. When a sudden spike breaks the pattern, it flags a potential slap event.
The CUSUM algorithm monitors for sudden shifts in your MacBook's acceleration data. A slap creates an unmistakable change point that gets flagged instantly.
Kurtosis measures the sharpness of acceleration peaks. This fourth statistical moment identifies the sharp, sudden spikes that define a real slap on your MacBook.
Calculates the Median Absolute Deviation to identify outlier acceleration events. A genuine slap on your MacBook stands out clearly from background noise.
Common questions about SlapMac — the app that turns your MacBook into a slap-reactive sound machine.
Download SlapMac free. Open-source, zero setup, works on M1 Pro, M2, M3, and M4 MacBooks. Your Mac is waiting to be slapped.
Free, open-source, and available on GitHub. Requires macOS on M1 Pro, M2, M3, or M4 MacBooks.