A calculator keypad that feels mechanical

• Real switch recordings. Key sounds are recordings of actual mechanical switches (CC0 licensed), with separate down and up strokes, and a deeper sound for the big = key.
• Fires on the way down. Like a real switch, the key acts as it travels down, not when you lift your finger, so fast typing keeps up.
• Low-latency audio. A dedicated audio engine plays each click instantly.
• Haptics. A light tap on every key press on phones.

Each key has a tapered skirt, a dished top, plastic grain, rim highlights and a contact shadow. Keys drop into the housing as you press and spring back on release. The chassis around them is brushed aluminium with screws, a solar strip and recessed wells.

Fast typing stays smooth: each finger is tracked separately and the key animation runs on the UI thread, so rapid entries stay smooth.

Tap the speaker key next to the display tint key to mute sounds. Your choice is remembered. Want to know why switch sounds are so satisfying? Read why mechanical keyboards sound good.