Klack is a tiny macOS menu-bar app that plays a mechanical-keyboard sound on every keystroke, turning a quiet MacBook keyboard into the clicky one you've always wanted. It ships with a few switch profiles, supports volume control, and stays out of the way once configured.

Made by Henrik Ruscon (also behind the Alcove now-playing app), Klack was featured in Forbes and is a one-time paid macOS app distributed via the Mac App Store.