# Tonality Visualizer — See tonality in real time

> See tonality in real time (iPhone/iPad app by Yusuke Yoshida.)

- Source: https://appshunter.io/ios/app/tonality-visualizer/id6754036478 (this page in markdown: same URL + `.md`)
- Developer: [Yusuke Yoshida](https://appshunter.io/developer/1846366607)
- Category: Music, Education
- Price: Free
- Age rating: 4+
- Requires: iOS 18.6 · 1 MB
- Languages: American English
- Released: 2025-10-17
- Data updated: 2026-09-06
- User reviews in markdown: https://appshunter.io/ios/app/tonality-visualizer/id6754036478/reviews.md

## What is Tonality Visualizer?

Tonality Visualizer is an interactive polar-pitch map that displays musical notes on a rotating disk.
You can connect a MIDI keyboard or open a MIDI file — every note appears in real time.
The app helps you see harmony, motion, and chord relationships, even without formal music theory.

Main Features
•MIDI Input: visualize notes directly from your keyboard or MIDI device.
•MIDI File Playback / Trainer Mode: play or practice chord by chord.
•Live Sound Option: enable/disable the built-in synth for input playback.
•Physics-based Disk Rotation: the disk moves naturally according to musical torque.
•Simple UI: switch between water-fixed / disk-fixed anchors, toggle UI visibility, bilingual JP/EN.

Perfect for music learners, creators, and anyone who wants to “see” sound.

Privacy
No data collection. All processing happens locally on your device.

License
Open-source under the MIT License. Source code available on GitHub.

Supported Formats
•.mid / .midi files (Format 0 / 1)
•CoreMIDI device input


## Version history (last 5 releases)

### 1.6.1 — 2026-08-24

• Refined note-group practice and keyboard layout, with selectable 1-octave and 2-octave ranges
• Added card/dice-style displays for movable-do and angle relationships
• Made Bright/Dark direction easier to read with circles, X marks, color, and consistent card patterns
• Made lowest- and highest-note highlights independent so they remain correct in compact keyboard ranges
• Added a preference for the clockwise pitch order around the fifths circle
• Reorganized chord, degree, and custom-notation text into the four corners while keeping chord candidates in a dedicated box
• Added compact landscape navigation, hideable portrait tabs, and improved iPhone/iPad layouts
• Localized chord capture, section markers, and automatic recovery in six languages, with improved overall stability

### 1.5.10 — 2026-08-01

■ Custom chord notation
Added custom chord notation based on DarkAngle, K1, K1→K2 movement, K2 scale degree, and BrightAngle.
Displayed the K2 movement as a small center value with a minus sign for negative movement.

■ K1 / K2
Improved K2 movable-do display.
Improved the K2 region in Disk Lock mode.
Kept K1, K2, DarkAngle, BrightAngle, and custom chord notation consistent across display modes.

■ MIDI playback
Added playback speed control.
Added show/hide playback controls.
Improved playback control layout.

■ Chord capture
Added manual chord capture during MIDI playback.
Added text export.
Added export options for time signature and MIDI start beat.
Added one chord per line and one measure per line export formats.
Added selectable export fields.

■ Section markers
Added A, B, C, and D section markers.

■ Keyboard
Added keyboard size adjustment.
Added white key outlines.
Improved screen layout.

■ Chord analysis
Improved chord analysis.
Improved chord candidate display.

■ MIDI
Improved MIDI input handling.
Improved live input and MIDI playback processing.
Updated the sample MIDI.

■ Other
Fixed unintended iOS double-tap behavior.
Improved UI and layout.
Fixed various issues.

### 1.5.0 — 2026-05-03

Added a note name highlight feature
Added a chord candidate display feature
Added a feature to display chord tones and other information

### 1.4.0 — 2026-03-14

Added a piano keyboard display feature

### 1.3.7 — 2026-01-19

Trainer target rings now show progress by changing color for notes that have been pressed
Chords no longer require simultaneous input: press all target notes in any order to advance (wrong notes reset progress)
Removed redundant text

## Apps similar to Tonality Visualizer

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Chord Analyzer Z](https://appshunter.io/ios/app/chord-analyzer-z/id6445883570) | — | $1.99 | Music |
| [CalmusNotation](https://appshunter.io/ios/app/calmusnotation/id993026661) | 4.4 (5) | Free | Music |
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| [WAVS Custom: 3D Scanner](https://appshunter.io/ios/app/wavs-custom-3d-scanner/id1615430458) | 3.8 (10) | Free | Music |
| [SessionBand Drums 1](https://appshunter.io/ios/app/sessionband-drums-1/id984010924) | 4.1 (25) | $8.99 | Music |

## More apps by Yusuke Yoshida

- [Outing Checker Widget](https://appshunter.io/ios/app/outing-checker-widget/id6762469204)
- [PanoramaMediaViewer](https://appshunter.io/ios/app/panoramamediaviewer/id6775153218)
- [境界簡易AR](https://appshunter.io/ios/app/ar/id6780533567)
- [Tuning Soundring Isle](https://appshunter.io/ios/app/tuning-soundring-isle/id6786756459)
- [Kanji Recall: Writing Practice](https://appshunter.io/ios/app/kanji-recall-writing-practice/id6787712475)

All apps by Yusuke Yoshida: https://appshunter.io/developer/1846366607

## Related topics

[tonality visualizer](https://appshunter.io/ios/topics/tonality-visualizer) · [tonal 2](https://appshunter.io/ios/topics/tonal-2) · [tonality trainer](https://appshunter.io/ios/topics/tonality-trainer)

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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 2026-09-06.*