Teclo

Teclo is a native Swift menu bar app for macOS 13 and later that plays a mechanical keyboard sound for every key you press, in any app. Press and release are two different sounds, like on a real board.

• 10 synthesized packs across five moods: Mechanical, Night, Retro, Arcade and Scifi. The sounds are rendered by Teclo's own synthesizer, not recorded.
• A keycap pet sleeps until your first key, gets happier as you speed up and catches fire when you hold the pace.
• Private by design: it hears the key, not the letter. No account, no server, no history.

USD 4.99 once for a lifetime licence (launch price), with a 7-day free trial. You can hear every pack in the browser on teclo.app before downloading.