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

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.