WINDOWS MACOS DESKTOP · LOCAL · NO CLOUD

Turn soundinto music.

Hum it. HumTheory hears the pitch, names the chord, finds the key — and hands you the MIDI.

Get the beta See it work

SIGNAL→ PITCH→ NOTES→ CHORD→ MIDI

Input

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Pitch

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Note

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Chord

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Export

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Hum it. See it. Use it.

02 — PIANO ROLL

Watch harmony move

A progression playing through the roll. As the playhead crosses each bar, the chord resolves and the notes light up — the same view the desktop app builds from your recordings, generated melodies and imported MIDI.

Cmaj7

I — TONIC

KEY OF C · 100 BPM · 4/4

03 — WHAT IT DOES

Sound in, information out

HUM TO MIDI

Your voice becomes notes

Sing anything. Pitch tracking runs in real time, locks each note as you hold it, and drops it onto the roll — ready to export as a standard MIDI file and drag into your DAW.

LIVE PITCH → NOTE LOCK

CHORD ANALYZER

Notes resolve into chords

Play or sing several notes and HumTheory works out what they add up to — with a confidence value and the runner-up interpretations, because harmony is genuinely ambiguous sometimes.

DETECTED PITCH CLASSES

CE GB →Cmaj7

92% match · also possible: Em6 · G6/9

SONG ANALYZER

Take a track apart

Load an audio file. HumTheory estimates key and tempo, decodes a chord timeline and marks section boundaries — all on your own machine, nothing uploaded.

WAVEFORM · CHORDS · SECTIONS

PROGRESSION GENERATOR

Progressions that fit your key

Genre-aware suggestions built from the key you're actually in — pop, jazz, blues, lo-fi and more. Audition them, send them to the roll, export the MIDI.

POP · KEY OF C

GUITAR & TABS

Every chord, on the neck

Chords map onto a playable fretboard with real fingering positions. Hover a chord to light up the shape.

FRETBOARD · Cmaj7

From voice to MIDI.

04 — MUSIC THEORY

The whole key, at a glance

Tap any key. Everything around it updates — relative minor, scale notes, diatonic chords, Roman numerals. This is the real tool from the app, running here.

KeyC Major

Relative minorA minor

Scale notes

Diatonic chords

05 — THE APP

Real builds, running now

The Tuner on each platform. Same engine, same navigation, same analysis — click either to look closer.

HumTheory on macOS: text-only sidebar navigation, circular pitch readout, frequency, cents and confidence meters, and a piano keyboard.

HumTheory on Windows: text-only sidebar navigation, transport bar with listen button, and a cents meter.

06 — GET IT

Built for the desktop

Low-latency microphone access and local analysis. Your audio never leaves your computer.

HumTheory for Windows

BETA · ACTIVELY DEVELOPING

Full analysis engine & theory tools
MIDI import and export

Download for Windows (.zip)

Windows 10 & 11 · zip · installer + source
Unsigned — SmartScreen will warn. Click More info → Run anyway

or build from source

HumTheory for macOS

BETA · AVAILABLE

Full analysis engine & theory tools
Playback against a detected chord timeline

Download for macOS (.zip)

Apple Silicon · macOS 14+ · zip · app + source
Unsigned — first launch, right-click the app → Open

or build from source

HumTheory is currently in beta.

Some features may be incomplete, experimental, or not work correctly yet. Detection is an estimate — the app shows confidence values and flags ambiguous chords rather than pretending to be certain. Project saving and piano-roll note editing aren't built yet. Builds are published as GitHub releases and are not code-signed yet, so Windows and macOS will both show a warning the first time you open them.