Offline musical intelligence
They taught machines
to make music.
We built one that makes it with you.
Learn theory. Train your ear. See inside any song's harmony. Generate all the inspiration you can play — free, offline, forever. This isn't a product with users. It's an instrument with a community.
One sign-in, one identity — the app, your progress, the forum.
Real app, real clicks — every chord you hear is the engine’s own render.
The depth, side by side
What you’ve used before, and HarmonoMy.
One side is where most tools stop. The other is a single instrument that keeps going.
See inside the music
Learn by doing
Create without limits
Mix & shape
Take it anywhere
Own it
Every row above is free for personal use. If the bridge into your DAW turns out to earn its place in your work, you can support it — and that keeps the rest free for everyone.
Free. As in forever.
Learn it. Hear it. Question it.
Create with it. All of it, free.
From music theory and ear training to analyzing songs and generating ideas — the instrument is yours for personal use. No card. No trial clock. No cloud.
Every clip is a recording of the real app.
It teaches your hands
Learn any song step by step — lit keys, story-driven theory, piano, fretboard or staff. A mentor that heard the song first.
You stay the composer
Doubt a chord? Open its real alternatives and decide yourself. The tool proposes; you dispose.
Start from a feeling
Drag the emotion pad, click once — eight chords are born, with Roman numerals and the named tricks inside them.
Endless inspiration
The engine hears three ways your progression could continue. Click one — it’s yours. Again. Forever.
Your backing band
Drums, bass, melody — switch the layers on and any song becomes your play-along session.
Solo with confidence
The Improv Oracle maps every chord: safe notes, color notes, licks and phrasing — your improvisation compass.
Three doors in
Start any way you like.
Understand my song. Inspire me. I have an idea. Three doors, one story — and everything flows to your DAW.
The bridge — optional
Want it living inside your DAW?
That's the one thing we sell.
The VST3/AU bridge takes everything above into Logic and Ableton — compose in your session, drag results onto your tracks, export channel by channel. It's optional. And it's what keeps everything else free.
The bridge itself — the same brain, as an AU/VST inside your DAW.
HarmonAI DAW sketching a session — every clip labeled with its chord and its function.
Real-song analysis
Drop MP3/WAV — chords, key, structure. On-device.
Channel-separated export
Chords, bass, melody, drums land as separate tracks.
Continuation rail
The engine hears three ways forward. Click to own one.
Walking bass
Statistically indistinguishable from a human player.
Groove DNA
Drums play in the analyzed song’s own pocket.
Form memory
Verse two remembers verse one. Sections breathe.
Emotion pad
Drag between dark/bright, calm/tense. It follows.
Musical touches
16 expression moves — in plain words, not Italian.
Hum-to-harmony
Sing a line. Get the chords under it.
Dice with taste
Reroll any chord — context-aware, never random.
MIDI / MusicXML / WAV
Markers and tempo maps included.
8 languages
The whole instrument speaks yours.
$149 lifetime license · 14-day money-back · supporting it keeps the free instrument alive for everyone
Prefer to spread it? $15/month — and after 15 months it’s simply yours. No renting, ever; paying once just gets you there for less.
Your studio. Your machine. Your music.
Cloud tools upload your ideas, charge you monthly, and disappear when the servers do. HarmonoMy does the opposite — everything stays local, you own it, and you pay once.
One instrument. Everything inside.
Chord analysis, a composition engine, a teaching mentor, ear training and a DAW plugin — not a bundle of subscriptions, an instrument you own.
Runs fully offline
Analysis, composition and teaching run natively on your hardware. No connection required.
Zero cloud, zero telemetry
Your music never leaves your machine. Nothing uploaded, nothing tracked.
Pay once, yours forever
A one-time license — no subscription fatigue, no expiry, no rug-pulls.
One app, not ten
Analysis, composition, teaching, ear training and a DAW plugin — together.
Community
In a world where AI claims to write music,
we gather the people who actually play it.
The abundance is the invitation: everything you need to grow as a musician, free — and a room full of people growing with you. One sign-in for the app, your progress and the forum.
Ask real musicians
Theory questions, progression feedback, mixing your generated parts into a track — answered by people who ship music.
Share what you built
Post the progression, the arrangement, the before/after. Your account here is your account there — one identity.
Shape the roadmap
Feature requests get discussed in the open. The loudest thread this month usually lands in the next release.
Forum opens with launch. Early members get the founding badge.
The pledge
Four promises,
written down on purpose.
It will never write your song.
The instrument proposes, teaches and accompanies — the composer stays human. We sell no finished tracks, and never will.
Your music never leaves your machine.
Analysis, generation, everything — on-device. No cloud, no telemetry, no training on your work. Unplug the internet; nothing changes.
When the engine isn’t sure, it says so.
Doubtful chords are marked, alternatives are shown, and the decision is yours. Confidence is earned, not performed.
The community stays human.
No bot posts, no purchased reviews, no invented numbers. If you see a count on this site, it’s real.
Inspired by the record stores that survived the supermarkets. If we ever break one of these, hold us to it — publicly, on our own forum.
Everything you might ask
Does it really work fully offline? +
Yes. HarmonoMy runs natively on your machine — analysis, composition, teaching and ear training all happen locally. Nothing is uploaded, there is zero cloud and zero telemetry. You only need internet to download it and check for updates.
How do I activate my license? +
After you buy, you receive a license key by email from our payment provider. Open the app, go to Activate, paste your key, and you are set. Activation happens inside the app — not on this website.
Can I get a refund? +
Yes — there is a 14-day money-back guarantee through Lemon Squeezy, our Merchant of Record. If it is not for you, request a refund within 14 days, no hard feelings.
Which DAWs does the plugin support? +
The Studio plugin ships as VST3 and AU, so it works in Ableton Live, Logic Pro, FL Studio, Cubase, Studio One, Bitwig, Reaper and any host that supports those formats.
macOS and Windows? +
Both. Native builds for macOS (Apple Silicon + Intel) and Windows. The download button auto-detects your OS.
Do I get updates? +
Lifetime licenses include updates within the major version. You buy once and keep it — no subscription, no expiry.
Can I use it commercially? +
Yes. Creator includes personal and commercial use; Studio includes a full commercial license. Everything you compose is yours.
Download HarmonoMy free
Install it, see chords in any song, and start learning today. Upgrade only when you are ready.
v1.0.0 · macOS (142 MB) & Windows (128 MB). SHA-256 published on the releases page.
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