TuneTheory

TuneTheory 2.0: a new pitch engine that locks in a fraction of a cent, a sample-accurate metronome with grooves, and one purchase for everything.

The tuner and metronome built for musicians who care about precision and feel.

TuneTheory hears your instrument ten milliseconds at a time and shows pitch to a fraction of a cent, with a live waveform that stands perfectly still the moment you land the note. Its metronome is sample-accurate: every click lands exactly where it should, at any tempo, no drift, no jitter.

INSTRUMENT TUNER • 45 instruments: guitar, bass, ukulele, violin, viola, cello, banjo, mandolin, and many more • 217 playable tunings, from Standard and Drop D to open tunings and artist favorites, with new artist tunings added every month • Retune guide: pick a new tuning and see which way each string goes, one peg at a time • Not sure what you're in? Play your strings and TuneTheory names your tuning • Auto string detection, capo support, and a locked-in color the instant you're there

CHROMATIC TUNER • Full chromatic detection with the nearest note, frequency, and cents • Strobe mode: a real-time waveform locked to the note, motionless when in tune • Reference pitch from A4 = 415 to 466 Hz for orchestral, baroque, and worship tuning

METRONOME • Sample-accurate timing that never drifts • Grooves: Backbeat, Shuffle, Waltz, 6/8 Jig, Bossa Nova, One Drop, Train Beat, at the tempo you feel • Living grooves: Challenge drops beats out so you hold the time yourself, Evolve builds over sixteen bars, Surprise rewrites the pattern every four • Eight kits, from clean clicks to felt kicks and kalimba, plus Pulse, a synthesized kit that shifts with every accent • Grid editor: hold any step to rest it, accent it, or give it its own sound • 2/4, 3/4, 4/4, 5/4, 6/8, and 7/8, swing feel, tempo ramps, and presets • Sound, haptic, and visual feedback, with a room setting for a little air around each beat

ONE UPGRADE, EVERYTHING UNLOCKED TuneTheory is free with generous basics. A single purchase unlocks every instrument and tuning, strobe mode, and the full metronome: every kit, every groove, living grooves, odd meters, swing, tempo ramps, and presets. No subscriptions. No ads. Pay once, own it forever.

No tracking. No accounts. Nothing leaves your device.