Tonality Visualizer
Yusuke Yoshida Music iPhoneiPadiPod touch
Tonality Visualizer is a free Music app for iPhone and iPad by Yusuke Yoshida. Requires iOS 18.6. Updated September 26, 2026.
- Price
- Free
- on the App Store
- Size
- 39 MB
- Age 4+
- Updated
- Sep 26
- 2026 · v1.6.2
Screenshots
About 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
What’s new
Version 1.6.2 · Updated September 26, 2026
• Added ASTRAL TRIAL, a practice game for learning note positions and intervals on the disk, with 48 stages and an infinite-HP practice mode. • Added sung movable-do solfège. Enable it in Settings to hear the syllables (off by default). • Increased the disk’s default weight for steadier movement. • Localized game instructions, mission text, and launch and defeat messages into six languages. • Added offline access to the privacy policy and licenses in Settings. • Improved memory management and stability.
App privacy
The developer, Yusuke Yoshida, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.