V-Tune
A precision strobe tuner built for handpans and other multi-modal
instruments — drums, gongs, bells, anything where a single strike
excites several pitches at once. Most chromatic tuners give up on
these instruments because they're built around one fundamental.
V-Tune is built around three.
v-tune-handpan.vercel.app ·
Download ·
User Guide (PDF)
Download
Free on every platform:
What it does
- Three-band strobe display — fundamental, octave, and 12th
rendered as independent strobe bands. Bars move when you drift,
freeze when you're locked.
- Per-band pitch pipe — continuous reference tone or beep-on-strike
mode for each band.
- Live mic-detected note — the note you're playing lights up on
the pitch wheel in real time.
- Pre-saved handpan scales — Kurd, Amara, Celtic and more, with
the ding highlighted.
- Spectrum analyser + isolation windows — bracket any peak in the
spectrum and turn it into its own tuning band.
- FFT peak detection + phase-rate Goertzel analysis — the FFT
finds the loud frequencies, the Goertzel measures how stable each
one is, frame to frame.
- Fully offline. No accounts, no analytics, no network requests.
Your microphone audio is processed on-device and never stored or
transmitted. (Privacy policy.)
Architecture
| Layer | Stack |
|---|
| Frontend | React 19 + TypeScript + Vite + Tailwind v4 + Zustand |
| Audio | Web Audio API + AudioWorklet + pitchfinder (YIN) |
| iOS / Android | Capacitor 8 |
| macOS / Windows / Linux | Tauri 2 |
| Web / PWA | vite-plugin-pwa (mobile + browser only — Tauri builds skip it) |
The full app is one Vite codebase. Each platform target wraps the
same compiled bundle in its native shell.
Source-available, not open-source
V-Tune is source-available — the code is public so you can read,
study, file issues, and propose improvements. It is not licensed
for redistribution, rebranding, or derivative apps. See
LICENSE for the full terms in plain English. If you'd
like to use V-Tune in a way the licence doesn't permit, open an issue
or get in touch.
Running locally (for contributors)
git clone https://github.com/simonbaronti/V-Tune.git
cd V-Tune
npm install
npm run dev # Web / PWA dev server on http://localhost:5183
For the native shells:
npm run tauri:dev # macOS / Windows / Linux desktop, hot-reload
npm run cap:ios # iOS, opens in Xcode
npm run cap:android # Android, opens in Android Studio
Production builds:
npm run build # web bundle → dist/
npm run tauri:build # Tauri desktop (current host's platform)
npm run tauri:build:mac # macOS universal (Intel + Apple Silicon), signed + notarized — requires src-tauri/.env.notarize (not committed)
CI/CD ships a tagged release on every git tag v*.*.* && git push,
building Android + Windows + Linux + publishing a GitHub Release with
the user-guide PDF attached. See
.github/workflows/release.yml.
Bug reports / feature requests
Open an issue. Real
bug reports from people tuning real instruments are the most valuable
thing you can contribute.
V-Tune © 2026 Simon Baronti. All rights reserved.
