Windows practice tool · for guitarists who already own an audio interface

Stop soloing over the scale. Start soloing over the chords.

Load a scale and a key. Build a progression from the voicings you actually play. Loop it — and watch the tones of each passing chord light up on the scale you're using, while the app listens to your guitar through your interface and marks every note you hit.

Email me when it launches See what it does

Windows 10 / 11ASIO interface recommended$10 for the first 1,000One-time purchaseNo account, no subscription

The app's fretboard showing a D minor pentatonic scale labelled in degrees, with the tones of the chord currently playing ringed. — **the root of the scale** **the root of the chord playing now** **the rest of that chord's tones** **in the scale, but not in this chord**

Three ways in — they stack

Level1

See the shapes, one box at a time.

Plug in and play. Every note you hit lights up where it lives on the neck, so you find out whether you know a scale or only know a pattern. Over 30 scales and modes, and a position filter that dims the rest of the fretboard so you're studying one box instead of twenty-two frets of noise.

Scale view with Position 1 selected: the notes outside that box are dimmed.

Position 1 selected — everything outside the box dims, so one shape is all you see. Note names or degrees, and the position is remembered per scale.

The same scale with no position filter: every note across the whole neck.

The same scale unfiltered. This is what you're up against before you narrow it down.

Level2

Build the changes with the shapes you'd really use.

A chord book with several real voicings per chord — open shapes and movable forms, each one authored and checked note by note. Pick the ones your hands actually reach for, string them into a progression, and they stay picked. The library is sorted by style — pop, rock, blues, jazz, folk, classical — and when none of them is the thing you’re working on, you build your own and it sits on the shelf next to them.

Chord explorer: pick a root and a quality, see every voicing on the fretboard.

Eleven qualities. Pick a root, pick a quality, compare the shapes.

Progressions view with the circle of fifths and harmonic function labels on each chord.

Progressions by degree, sorted by style, plus the ones you wrote yourself. Each chord carries its harmonic function — or a flag when it’s borrowed from somewhere else.

Level3

Loop it. Solo over it. See the chord tones move.

This is what the first two were for. In practice mode you load a scale and a key, load your progression, set the tempo and let it run with drums. As each chord passes, its tones light up on the scale you're already looking at — so you can see which notes land on the chord and which ones are just passing through.

That's chord-tone soloing, and it's the difference between running a pattern and playing a line. Use it to practise between lessons, or to write the solo you keep hearing in your head.

Practice mode: a looping progression on the right, the scale on the fretboard with the current chord's tones highlighted.

Here the VI chord is sounding: its root rings blue, its other two tones ring orange — one of them being the scale’s own root — and the 4, 5 and ♭7 stay grey, in the scale but not in this chord. Loop, tempo, time signature, groove and drums live on the right.

Why it needs your interface

Low latency isn't a feature here. It's the whole premise.

Phone apps listen through a phone microphone and a shared audio stack. That's fine for tuning up. It falls apart the moment you want the fretboard to keep up with your hands.

Guitar Pick Click reads your interface through ASIO, so the signal reaches the detector by the shortest route Windows offers. Pick your input, press Listen, play.

ASIO, not the OS mixer. Your interface's own low-latency driver — the same path your DAW takes — instead of the shared Windows audio stack that every phone-style app is stuck behind. You pick the input and the buffer size yourself.

Detection still isn't instant: a note has to ring long enough to be identified, and low strings take longer than high ones. That part is the physics of a vibrating string, not a setting.

Your signal, not your room

Guitar, cable, interface. No air, no laptop fan, no neighbour's TV in the analysis.

Runs on your machine

Detection happens locally in a native C++ engine. Nothing is uploaded, and there's no account to create.

It never plays your guitar back

The app reads the notes, that's all — the sound stays where it always was. Monitor the way you already do: direct monitoring on the interface, or through your audio software.

Your plugins keep running

On an interface whose ASIO driver is multi-client, this holds the input while your DAW holds it too. Practise through your own amp sim, your own pedals, your own presets — not a dry signal.

The details that keep it usable

Bend the scale. Then recolour the whole thing.

Add a note that isn't in the scale

Position filter and extra notes controls: single degrees can be added to the loaded scale.

Drop a single degree into a loaded scale — the ♭5 on a minor pentatonic, say — and find out what it does under your fingers. Saved per scale, and one click to put it back.

A tuner that also sets your intonation

Built-in tuner with a 'tune at fret' selector.

Tune at any fret, not just open. Useful when a nut is chipped or a string buzzes open, and with a capo on. It's also how you check your intonation: tune open, switch the selector to the 12th fret, and read the cents — sharp means the saddle goes back, flat means it comes forward.

Every colour you've seen on this page can be changed in the advanced panel — scale notes, roots, chord tones, the lot. With three layers of information stacked on one fretboard, tuning the palette to your own eye isn't decoration; it's what keeps the display readable. Names or degrees, A–G or Do–Si, English or Spanish.

Before you buy

What it is, and what it isn't.

Windows 10 or 11, 64-bit

The macOS version is on the way, but it isn't here yet.

An ASIO audio interface is strongly recommended

It runs on regular Windows audio too, but the latency is noticeably higher and you will feel it.

One note at a time

Detection is monophonic. It's built for single-note playing — scales, lines, arpeggios. It won't read a chord you strum.

It teaches the fretboard, not songs

No lesson tracks, no tab library, no song catalogue. Progressions are named by their degrees, not by the records that made them famous.

The installer isn't code-signed

Windows will warn you the first time you run it. Here's exactly what you'll see.

It makes no sound of its own from your guitar

The looped progression and the drums come out of your speakers. Your guitar doesn't — you monitor that yourself, as always.

It's a practice tool, not a teacher

It won't tell you what to work on. It shows you what you're playing and what's underneath it, in time.

Expect this on first run

About the Windows warning.

Guitar Pick Click isn't code-signed yet. A certificate runs several hundred dollars a year, and until the app pays for itself that money is better spent on the app. The trade-off is that Windows SmartScreen shows a blue box the first time you run the installer, saying the publisher is unknown.

That is not a virus warning. It means Windows hasn't seen enough copies of this exact file yet. Every unsigned installer from every small developer gets it.

Click More info — the blue box expands and shows the file name.
Click Run anyway — the installer starts. Windows won't ask again on this machine.

Rather check first? The SHA-256 of the current installer is published on the download page — drop the file into VirusTotal before you run it.

Launching September 2026

$10 for the first 1,000 copies. $20 after that.

It is not on sale yet. The app is finished; the buying side is not. Leave your address and you will hear on the day it opens — one email, and nothing else ever.

The app is finished, but it hasn't been played by anyone except me yet. The first thousand copies go out at a third of the price because the feedback from those thousand guitarists is what decides which features get built next. You get a tool that will keep growing, for the price of a set of strings.

Every feature. No tiers, no subscription, nothing held back.
Activate with the email and key from your receipt.
Works on two computers — release one when you change machines.
Automatic updates built in, included for the whole of version 1.
Refund within 14 days, no questions asked.

$10USD · one time

Email me when it launches

First 1,000 copies at this price.
No countdown, no fake timer — when they’re gone, it’s $20.

On the way

A macOS version is coming.

Windows came first because ASIO is a Windows driver standard, and the low-latency path had to work before anything else did. The Mac build uses Core Audio instead, and it's next on the list — but it isn't shipping until it's been tested on real hardware with a real guitar plugged in, because that's the only way audio bugs show themselves.

No date yet. Leave your address and you'll get one email when it's ready — nothing else, ever.

Tell me when the Mac version lands

One email, when it ships. No newsletter.

Questions

Before you ask.

Do I really need an audio interface?

Not strictly — it will run on your computer's regular sound input. But the app was built around a low-latency path, and on shared Windows audio the delay between playing a note and seeing it is big enough to get in the way. If you own an interface, this is the tool for it. If you don't, buy an interface first.

Will it work with my DAW open?

On an interface whose ASIO driver is multi-client, yes — both can hold the driver at once. Some interfaces only allow one application at a time; on those you'll have to close one.

Can I practise through my amp sim and pedals?

Yes, and that's the intended way to use it. The app doesn't reproduce your guitar or alter your signal — it only reads which notes you played. Whatever chain you monitor through, plugins included, stays exactly as you set it up. On a multi-client interface both can read the input at once.

Is anything I play sent anywhere?

No. Note detection runs locally on your machine. The app doesn't record audio and doesn't upload it. The only thing it talks to online is the licence check when you activate.

Can it read a chord if I strum it?

No. Detection is monophonic — one note at a time. Chords are shown and looped by the app, not detected from your playing.

I got a new computer. Do I have to buy it again?

No. Release the licence on the old machine and activate it on the new one with the same email and key.

Is there a version in Spanish?

The app is fully bilingual — English and Spanish, with A–G or Do–Si note names. This site is English only for now.