# Ensemble Tuner: Chord Detector — Just Intonation for Ensembles

> Just Intonation for Ensembles (iPhone/iPad app by Daisaku Seto.)

- Source: https://appshunter.io/ios/app/ensemble-tuner-chord-detector/id6818659518 (this page in markdown: same URL + `.md`)
- Developer: [Daisaku Seto](https://appshunter.io/developer/1889853807)
- Category: Music, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 5 MB
- Languages: American English
- Released: 2026-10-04
- Data updated: 2026-10-09

## What is Ensemble Tuner?

During ensemble rehearsal, it's hard to tell whether your part is "a bit flat" or whether the whole band has drifted sharp. Ensemble Tuner analyzes multiple notes simultaneously and visualizes each pitch's deviation in real time.

■ Polyphonic note detection

Using a polyphonic pitch-detection engine (Basic-Pitch) running entirely on-device, Ensemble Tuner recognizes multiple pitches at once — not one note at a time. See all the notes in a chord simultaneously. Ideal for wind bands, string ensembles, choirs, and orchestras.

■ Just intonation target line

A blue line on each tuner bar marks the just intonation sweet spot. Tuning to just intonation instead of equal temperament makes chords blend and resonate. Major 3rd target: −14¢, Perfect 5th: +2¢.

■ Real-time chord detection

Automatically identifies chord names from the detected notes. See "Bb Major," "Cm7," and more while you play.

■ Adjustable reference pitch

Change A4 from 430 to 450 Hz in 1 Hz steps. Default is 442 Hz, standard for wind bands and orchestras.

■ 100% on-device processing

No internet connection needed. All audio processing happens locally on your device in real time. No audio data is sent anywhere.

■ Spectrum view (optional)

A heat-color frequency spectrum panel shows detected note positions as orange vertical markers.

■ Best used for

Tuning sessions, long-tone practice, and held harmonies — any time notes are sustained. Like a guitar polyphonic tuner, the approach is "play, hold, and check." It is not designed to track rapidly changing chords in a fast-moving performance.

## Is Ensemble Tuner safe?

Not enough ratings yet to assess Ensemble Tuner.

## Is Ensemble Tuner legit?

Ensemble Tuner: Chord Detector appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Ensemble Tuner is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-10-05

No release notes.

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## More apps by Daisaku Seto

- [ToneCraft](https://appshunter.io/ios/app/tonecraft/id6761473626)
- [ScoreLibrary](https://appshunter.io/ios/app/scorelibrary/id6761536209)
- [World Prism](https://appshunter.io/ios/app/world-prism/id6761618784)
- [SokuraChat](https://appshunter.io/ios/app/sokurachat/id6761684130)
- [SAPIENTIA Research](https://appshunter.io/ios/app/sapientia-research/id6761721069)
- [Attenai](https://appshunter.io/ios/app/attenai/id6762042775)

All apps by Daisaku Seto: https://appshunter.io/developer/1889853807

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-09.*