A puzzle game on a real analog-circuit simulator

Real circuits, played by ear

Move the faders, watch the trace, match the sound.

Get it on the App Store Free · today's circuit, every day · iPhone, iPad, Mac & Apple Vision Pro Studio is one purchase. No subscription. No ads.

Circuit Piano gameplay: a neon oscilloscope trace above four colored faders labeled cutoff, resonance, drive, and level

A matched circuit: the results card sweeps up to this solve's score out of 1000, over the stored best

Mid-tune gameplay: cyan and gold traces nearly overlapping as the match closes in

A scope channel: the signal drawn as stacked ridges, the player's in cyan against a fixed gold target ridge

The step sequencer: a four-by-four grid of yellow note pads

The same fuzz as a physical circuit board: color-banded resistors and transistors on two-layer copper, wired in below the live scope

Open-ended certified puzzles across 1,024 circuit designs — dealt to how you play, against the clock · free every day, Studio is one purchase · no ads, no accounts

Ready when your ears are.

Download on the App Store