Circuit Piano: Synth Puzzles

About

Hear the target. Shape your sound. Find the match before the clock runs out. Play 128 circuits free. Circuit Piano is a sound puzzle game built from live simulations of synths and guitar pedals. Every adjustment changes what you hear. No music theory or electronics experience needed. FIND THAT SOUND Hold GOAL to hear your target, then move the controls to match it. Listen for the difference and watch the waveforms draw closer. Turn a harsh buzz into a warm tone, tame a filter, or dial in a gritty fuzz. KEEP YOUR RUN ALIVE Match each sound before time runs out to build your score. The challenge adapts as you play. Chase your best run and compare scores on Game Center. PLAY WHAT YOU TUNE Use the built-in piano keyboard to play a circuit yourself. Make a pattern with the sixteen-step sequencer, connect a MIDI keyboard for velocity, sustain, and pitch bend, or play live sound through a circuit with the microphone and headphones. Every input and control is included free during the circuit's time limit. Complete unlocks untimed instrument play, including after a solve. START FREE Explore 128 circuits across every difficulty level and four live scope channels. Adjust sliders, knobs, thumbwheels, and ribbons. Turn the detailed circuit boards over to inspect the copper underneath. Play offline without ads or an account. CHALLENGE A FRIEND Send a circuit and your score in one link. Your friend gets the same starting point and a score to beat. Any shared or entered sixteen-character code plays free, including its scope channel for that sitting. Send the higher score back to keep the challenge going. GET THE COMPLETE COLLECTION Circuit Piano Complete is one optional, permanent in-app purchase. Unlock unrestricted access to all 1,024 circuits, all 32 scope channels and untimed instrument play: more synths and pedals to solve, play, and explore. Combine catalog filters to find circuits by number, component, fader count and tuned status. Browse your personal records together and see unique circuit coverage. Individual code records, search, pins and history stay free. Different targets, component builds, and starting settings give familiar circuits a fresh challenge. No subscription. Already paid for Circuit Piano or its permanent unlock? Everything stays included. Restore purchases with the same Apple Account. MADE FOR iPHONE AND iPAD • Play offline, with no account required • Sync progress privately with iCloud • Game Center leaderboard and achievements • Apple Pencil tilt for fine control on iPad • Hardware keyboard commands • VoiceOver, Dynamic Type, Reduce Motion, and Dim Flashing Lights support • No ads or tracking Designed for headphones. Made for listening.