Free key finder plugin for Mac and Windows. VST3 and AU.

Find the key.
Then hit record.

The HomeNote plugin window: A minor, 90% sure, Detune 441.3 Hz, 129 BPM, with A minor, C major and G major as the settings that fit
Works in the DAW you already use
  • FL Studio
  • Ableton Live
  • Logic Pro
  • Cubase
  • Reaper
  • GarageBand

HomeNote hears your beat, finds the key and the Detune your vocal needs, then counts the tempo while you play.

How it works.

Play it live, or drop in a file.

  1. Listen live

    Put HomeNote on your beat or master track and press play. It listens as the track runs, and the ring fills as it gets surer.

  2. Drop in a file

    Or drag a WAV, MP3 or FLAC onto the window. HomeNote reads the whole file and gives you the same answer.

Confidence: settings that fit.

Know how sure it is.

Each bar is how sure HomeNote is of that key. When one is clearly ahead, it turns orange: that's your setting.

When two keys are close, it says “Could be” and names the note that decides between them, instead of guessing. Keep playing and the bars settle as it hears more of the track.

Details: the pitch profile.

See why it picked the key.

Open Details and HomeNote shows how much of each note is in your track, on a strip laid out like a keyboard. The home note glows orange, notes in the key are grey, and notes outside it are dashed.

When two keys share almost every note, it outlines the deciding notes, so you can hear the difference yourself: here an F means A minor, an F# would mean G major. A key timeline next to it shows if the song changes key. Every note is spelled the way Auto-Tune spells it: C#, Eb, Bb.

Detune in Hz.

For the beats that aren't tuned to 440.

Samples and loops drift. HomeNote measures the reference pitch and turns it amber when the track sits 3 cents or more off standard, before the tuning sounds wrong.

Tempo, halved or doubled.

Trap at 71 or 142? One tap.

Half-time and double-time are both right answers. Flip the reading to match how your session is counted.

Tested on songs it never trained on.

684 songs from the Free Music Archive with expert key labels, half of them hip-hop. None were used to train or tune HomeNote. Every tool ran on the same computer, on the same songs.

When HomeNote isn't sure, it shows its top three guesses instead of one confident wrong answer.

How HomeNote listens, and how we tested it Each step of the analysis shown as a picture, the song-by-song results, and the files to check them yourself.
Right key on screen · same 684 songs
HomeNote83.8%
573 of 684: in its top three
Auto-Key 264.5%
441 of 684: its answer or its relative-key switch
libkeyfinder53.9%
369 of 684: it gives one answer

A song counts when the experts' key is anywhere the tool shows it. Counting only each tool's first answer, it is 67.7% for HomeNote, 58.5% for Auto-Key 2 and 53.9% for libkeyfinder. Auto-Key 2 was run in File Mode; the others analyzed whole files.

Why it's more accurate.

Made to hear the key inside a beat.

Auto-Key 2 runs on TONART v3, a key-detection engine zplane licenses to DJ and music software (FL Studio, djay and Mixed In Key among them), built in zplane's words for checking whether tracks are compatible and for tagging them. Open-source key finders, like the engine inside Mixxx and KeyFinder, use the classic approach: add up how much of each note the song plays and match it against fixed music-theory templates. HomeNote is its own engine, trained on beats, loops and 808s: the kind of music people tune vocals over.

Hears through the drums

HomeNote pulls the sustained, tonal parts of the mix apart from the hits before it counts notes. Kicks, snares and hats don't smear the picture, and the 808's pitch still counts as bass.

Classic approachCounts everything in the mix, drums included.

Learned, not hand-written

A neural network decides the key. It learned from thousands of expert-labelled songs and producer loops, plus practice beats with drums and in-key 808s, and its answer is blended with the classic key profiles.

Classic approachFixed templates written from music theory, the same for every genre.

Tunes before it listens

It measures the beat's reference pitch first, to a tenth of a hertz, and lines its note grid up with it. A sample tuned to 437 Hz still lands on the right notes.

Classic approachAssumes A = 440 Hz, so a detuned sample can blur between neighbouring notes.

Free. Pay what you want. No account. No trial.

Get HomeNote free.

Download it for Mac or Windows. If it saves you time, pay what you think it's worth.

Mac

macOS 11 or later · Apple silicon and Intel

Download Installer · VST3 + AU · 16 MB
How to install
  1. Open HomeNote-Mac-Installer.pkg.
  2. Click Continue and Install, and enter your Mac password. VST3 and AU both go straight into your plugin folders.
  3. Rescan plugins in your DAW. In FL Studio: Options → Manage plugins → Find installed plugins.

To install by hand, download the VST3 zip or AU zip, unzip it, then drag HomeNote.vst3 into ~/Library/Audio/Plug-Ins/VST3 or HomeNote.component into ~/Library/Audio/Plug-Ins/Components. Then run this in Terminal so macOS lets it load:

xattr -dr com.apple.quarantine ~/Library/Audio/Plug-Ins/VST3/HomeNote.vst3 ~/Library/Audio/Plug-Ins/Components/HomeNote.component

Windows

Windows 10 or 11 · 64-bit

Download VST3 · 4 MB
How to install
  1. Right-click the download and choose Extract All.
  2. Open C:\Program Files\Common Files\VST3 in File Explorer.
  3. Drag the HomeNote.vst3 folder into it and click Continue when Windows asks for permission.
  4. Rescan plugins in your DAW. In FL Studio: Options → Manage plugins → Find installed plugins.

To remove it later, delete the HomeNote.vst3 folder.

Hear about new versions.

HomeNote doesn't check for updates itself. Leave your email and we'll tell you when a new version is out. Nothing else.

Check your download

Each file's SHA-256 fingerprint is listed here. If the fingerprint of the file you downloaded matches, it is exactly the file we published. Run shasum -a 256 FILE in Mac Terminal or Get-FileHash FILE in Windows PowerShell and compare.

Mac installer
dc82ce2142a24e7ed9f49bab3eae5d3000b6f495c471419bdd3c9813626d9326
Mac VST3 zip
bd41e0c6d36f06b6bc7e989f312e569fbb5ae1ed95fe86cd90fc68b4b329234e
Mac AU zip
be89a7b61c929c2932c01701f3fbb12ceb006208a257d3d4e40e550be4d5d8c8
Windows VST3 zip
ec6b5ac11fb58fbfa509be57cf393e4c936aec8eeff64f06ccb7c437f6fda77d
  • VST3 and AU
  • Mac and Windows
  • Live and file drop
  • Installs only the plugin

Questions.

Is it really free?

Yes. Every feature is included, and there is no trial, account or email needed to download it. You can pay what you want if you'd like to support it, and that includes nothing.

Is HomeNote a free alternative to Auto-Key?

Yes. Like Antares Auto-Key, HomeNote listens to your track and tells you the key, scale and tuning reference to use in Auto-Tune. HomeNote is free, runs as a VST3 or AU plugin in any DAW, and also counts the tempo. The one difference: you type its settings into Auto-Tune yourself, it does not send them for you.

What do I need to run it?

macOS 11 or later on Apple silicon or Intel, or 64-bit Windows 10 or 11, and a DAW that loads VST3 or AU plugins.

Does it work with Auto-Tune Pro or other tuners?

HomeNote shows the key, scale and Detune in Auto-Tune Artist terms, and the same key and scale work in Auto-Tune Pro and most other pitch tools. You type them in yourself.

Does it send my audio anywhere?

No. HomeNote never connects to the internet. All listening happens on your computer.

Will it slow down my session?

It only listens while its window is open, so a closed HomeNote uses no CPU. You can turn on background listening in its settings.

How do I hear about new versions?

HomeNote never goes online, so it can't tell you about updates itself. Leave your email on this page and we'll write when a new version is out. Nothing else.