Smack it. Tap it. Bump it. SmackBook uses your Mac's built-in accelerometer to detect impacts and play sounds. Every. Single. Time.
Get SmackBook — $4.99One-time purchase · macOS 15+ · Apple Silicon
Tap, slap, or bump your MacBook. The built-in accelerometer detects every impact.
A random sound plays instantly. 8 built-in sounds that never repeat twice in a row.
Lives quietly in your menu bar. Adjust sensitivity, cooldown, or turn it off anytime.
From "Very High" (reacts to light taps) to "Very Low" (only strong impacts). Find your sweet spot.
8 sounds included. Drop your own .mp3 files to use whatever you want.
Your preferences persist between sessions. Set it once, forget about it.
Runs silently in the menu bar. No dock icon. Minimal resource usage.
Plug or unplug any USB device and your Mac moans. Toggle it on from the menu bar for instant audio feedback on every connect and disconnect.
One-time purchase. No subscriptions. Free updates forever.
Requires macOS 15+ · Apple Silicon (M2 or later)
Any MacBook with Apple Silicon M2 or later (M2, M3, M4) running macOS 15+. M1 Macs are not supported as they lack the required accelerometer access.
The accelerometer is accessed through IOKit HID, which requires admin privileges on macOS. This is an OS-level requirement, not something we can bypass.
Yes! Drop any .mp3 files into the app's sounds folder and SmackBook will automatically pick them up.
Nope. The accelerometer is a low-power sensor and the app only processes simple data. Battery impact is negligible.
If you never accessed the download link, you'll get an instant no-questions-asked refund (accidental purchase). Otherwise, if you are unhappy with the app or your computer is not compatible, just reach out.
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