The problem
macOS updates and app installations can take a long time. If your Mac sleeps during an update, it can corrupt the installation.
Why it happens
macOS does prevent sleep during critical system updates, but non-critical updates, App Store installs, and Homebrew/package manager operations don't always have this protection.
The fix: Shake It On
Shake It On keeps your Mac awake by moving the mouse slightly at regular intervals. macOS sees real user activity and resets the idle timer. Set it up with the right conditions and it only runs when you're actually system updates.
Recommended conditions for system updates:
- Only Shake If CPU is above 15%
- Paused When on battery
Shake It On keeps your Mac awake during system updates with smart conditions. $9.99 one-time. Get Shake It On for $9.99 →
Keep your Mac awake the easy way.
Shake It On lives in your menu bar and uses organic mouse movement to prevent sleep. Set it once and forget it.
Get Shake It On for $9.99One-time purchase. No subscription. Free updates forever.