Smack Mac

Smack your MacBook. Hear a sound. Pure chaos.

Smack Mac is a free macOS menu bar app that detects when you physically slap your MacBook and plays a sound effect. It uses the built-in accelerometer on Apple Silicon MacBooks to feel the impact — no external hardware needed.

How It Works

1. Smack — Physically smack your MacBook. Yeah, really.
2. Detect — The built-in accelerometer feels the impact.
3. Boom — A sound plays. You laugh. You smack again.

Requirements

• Apple Silicon MacBook (M1 Pro or later recommended)
• macOS 14 (Sonoma) or newer

Features

• Lives in the menu bar — no dock icon, stays out of your way
• Adjustable sensitivity (low, medium, high)
• 5 built-in sound effects to choose from
• Launch at login support
• Free and open source, no data collected

Install

Download the latest release and drag to your Applications folder.

Note: The app requires admin privileges to access the accelerometer hardware. Run with sudo open SmackMac.app or grant access when prompted.

Credits

Built with SwiftUI, IOKit, and AVFoundation. No third-party dependencies.