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Simple Settings

Keyboard Layout
Microtonal & Temperament
Color Palette
Key Shape
Appearance
Tools
Advanced Settings
About & Support
Keyboard Layout
Microtonal & Temperament
Color Palette
Board Height: 6 Keys
Key Shape
Hexagon
Circle
Diamond
Square
Rectangle
Guides
Training
Scale & Chords
QWERTY Labels
Simple Settings
Appearance
Key labels
Highlight all keys
Glass outline
Touch effect: Off
Color palette
Sound Effects
Reverb 0%
Chorus 0%
Distortion 0%
Echo 0%
Audio Mixer
Master Volume 100%
Keyboard Volume 100%
MIDI Playback 100%
Envelope
Attack 0%
Release 0%
Expression & Playback
Background Play
Sustain Pedal
Dynamic Velocity
Touch Vibrato
MIDI & Performance
MIDI I/O
X/Y Pad
Performance Mode
Haptic off
Quick Setup
Display & Interface
Fullscreen
Unpin Top Bar
Adaptive Mode
Language
Frosted Glass
Simple Settings
About & Support
Info
Feedback
Enjoying Hex MIDI? Rate us on the App Store
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Keyboard Shortcuts
Settings Esc
Quick Setup ` / ~
Instrument Grid Tab
Layout Switcher Alt
Pan Keyboard Arrow Keys
Sustain Pedal Space (Hold)
Sustain Lock CapsLock
Octave Shift Ctrl + ←/→
Cycle Instrument Ctrl + ↑/↓
Keyboard Height Ctrl + +/−
Developer Tools TEST
Pro Mode: OFF
Account
Hide X Buttons
Test Ads: OFF
RC Live: Off
GA Live: Off
Rate Card
Glass Tuner
What's New
Override Device
Simulate Cutout & Notch

MIDI Settings

Input
Omni
No results found
Output
No outputs found
MIDI diagnostics
Internal Audio

Keep on to hear Hex MIDI while sending MIDI out. Tap the keyboard once on iOS to unlock sound.

Microtonal Output
Tuning Standard
12-TET Input Remap
Auto-Sync Scale From Song

MTS transmits scales via MIDI Tuning Standard SysEx. MPE uses channels 2–16 with per-note pitch bend. 12-TET Remap maps 12-note songs into in-tune microtonal degrees, and folds microtonal songs down to 12 keys when scale sync is off.

Tips: USB, Mac, and Bluetooth
--
0:00 0:00
Metronome
Tempo 120 BPM
Popular Presets
Time Signature
Beats (Numerator)
Beat Value (Denominator)
Sound Effects
Reverb 0%
Chorus 0%
Distortion 0%
Echo 0%
Audio Mixer
Master 100%
Keys 100%
Files 100%
Envelope
Attack 0%
Release +20%
Expression & Playback
Background Play
Sustain Pedal
Dynamic Velocity
Touch Vibrato
Audio Ready

Hex MIDI

The Isomorphic Advantage

Hex MIDI is a professional digital instrument leveraging isomorphic keyboard layouts and microtonal tuning systems. Unlike traditional piano keyboards, Hex MIDI uses consistent geometric grids where musical interval shapes remain identical in every key.

Beginner Friendly

Visualize music theory instantly. Learn one chord shape or scale pattern once and transpose it across all keys without changing finger positions.

Professional Power

Extend physical hand span over two octaves. Seamlessly integrate with DAWs like Ableton, Logic, and Cubase.

Supported Keyboard Layouts

Hex MIDI provides 12 built-in isomorphic systems plus a fully customizable layout engine:

Hexagonal Layouts

  • Wicki-Hayden: Theoretical perfection for diatonic and chromatic harmony (fifths diagonally, octaves vertically).
  • Janko (Classic & Vertical): Legendary 19th-century ergonomic piano layout featuring whole-tone rows with semitone vertical staggers.
  • Harmonic Table: Ideal for triad chord structures, major/minor third diagonals, and intuitive voice leading.
  • Bosanquet-Wilson (Maupin): 3-semitone horizontal, 1-semitone vertical flat-top hexagonal system.
  • Chromatic Accordion (C-System & B-System / Bayan): Standard layout for classical button accordion players.

Matrix & Square Layouts

  • Perfect Fourths (Guitar, Bass): Standard 5-semitone vertical interval grid familiar to string instrument players.
  • Perfect Fifths (Violin, Cello): Orchestral string instrument tuning grid (1 semitone horizontal, 7 semitones vertical).
  • Major Thirds (LinnStrument & Push): Matrix layout with 4-semitone vertical offsets.
  • Harpejji: 2-semitone horizontal and 1-semitone vertical tapping grid layout.
  • Diminished Harmonica: 3-semitone horizontal and 1-semitone vertical layout.

Custom Layout Builder

Design, save, and switch between your own custom hexagonal (pointy-top or flat-top) and square grid geometries with custom axis tuning intervals.

Microtonality & Xenharmonic Studio

Explore tuning systems beyond standard 12-tone equal temperament (12-TET):

Equal Temperaments (EDO / EDT)

Built-in support for 19-EDO, 22-EDO, 24-EDO (Quartertone / Maqam), 31-EDO, 41-EDO, 53-EDO, Bohlen-Pierce (13-EDT), 15-EDO, 17-EDO, 5-EDO, 7-EDO, and custom divisions up to 1200 EDO.

Historical & Just Intonation

Pythagorean, Quarter-comma Meantone, 1/6-comma Meantone, Werckmeister III, Young / Vallotti, Just Intonation (5-limit & 7-limit), Harmonic Series, Arabic Maqam Rast, Indian 22-Sruti, and Slendro / Pelog presets.

  • Scala (.scl) & Korg MTS (.kbm) Import: Import tuning definitions (`.scl`) and keyboard maps (`.kbm`) directly into the app.
  • Custom Scale Generator: Create custom microtonal scales with exact cents or mathematical frequency ratios, custom root pitches, and generator steps.
  • Adaptive Microtonal Notation & Pitch Display: Dynamic Ups-and-Downs notation (↑ / ↓), exact pitch cents display, and full MPE / Pitch-Bend synthesis.

Studio Tools

  • Studio Tools: Dynamic touch velocity, pattern/sequence recorder, built-in metronome, and SFX audio effects (Reverb, Chorus, Delay, Distortion, EQ).

Keyboard Shortcuts

Settings Esc
Quick Setup ` / ~
Instrument Grid Tab
Layout Switcher Alt
Pan Keyboard Arrow Keys
Sustain Pedal Space (Hold)
Sustain Lock CapsLock
Octave Shift Ctrl + ←/→
Cycle Instrument Ctrl + ↑/↓
Keyboard Height Ctrl + +/−

Janko Layout Chord Examples

Developed by Zung Studio — Version

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@ 2026 Zung Studio

What's New in Hex MIDI v0.10.1

Faster & Smoother Performance

Greatly reduced memory usage for smoother playing and longer battery life across all devices.

Liquid Glass & Fluid Spring Animations

Translucent glass interface with realistic optics and Apple-style fluid spring animations.

Custom Instrument Colors

Personalize instrument group colors with an interactive color wheel, quick swatches, and live accent preview.

Looping Arpeggiator & Strum

Create rhythmic sequences with a looping arpeggiator, latch, gate, and dynamic strumming styles.

Chord Progressions & Voicings

Play guided chord progressions, rich jazz voicings, and explore the Circle of Fifths.

Sharp & Flat Custom Display

Customize accidental notation with dedicated sharp (♯), flat (♭), or enharmonic displays.

Interactive Training Mode

Learn songs, chords, and scales step-by-step with guided interactive practice and progress scoring.

15 Languages & Custom Themes

Full support for 15 languages, customizable color schemes, and enhanced touch controls.

Cross-Platform Pro Sync

Access and restore your Pro unlock seamlessly across iOS, Android, and Web when signed in to your account.

Select MIDI File

Select Custom Layout

Soundfont Manager

Layout Editor

Slide or swipe to adjust values
→
Whole Step
↖
-Half Step
↗
Half Step
↑
Whole Step
Root
C4
Min C-1
Max G9
Layout Preview
100%

Pro Version

You're currently using the Free Version.
Unlock Pro to access Dynamic Velocity, Touch Vibrato, MIDI I/O, Custom Layouts, Microtonal Scales (Experimental), the Extended Library, and enjoy an Ads Free experience.

Sign In to Hex MIDI

Link your account to sync your Pro license across Web, iOS, and Android seamlessly.

or
Fast payment via Card, Apple Pay, Google Pay
or restore with email
Enter the email you used at Stripe web checkout.
Signed in as:

Quick Setup

1. Keyboard Layout
2. Key Shape
3. Keyboard Height
🔋

Background Audio

To prevent audio jitter when the screen is off, please set Hex MIDI to Unrestricted battery usage in the next system screen.

Confirm Action

Are you sure?

Rename File

Glass & Liquid Tuner

Glass Style
Presets
Glass Blur 12px
Glass Saturation 140%
Glass & Tint Opacity 32%

Custom Scale Builder

Sub-12 EDOs
Common EDOs
12-TET Subdivisions (Semitone Division)
19-EDO Harmonic Table
Step: 63.16 cents
Generator 5th: Step 11 (-7.2¢)
Major 3rd: Step 6 (-7.4¢)
Starter Templates
#0 1/1 (Root / Unison) 0.0 cents
7 tones • Equave: 2/1 (1200.0¢)

Language

Key Labels

Notation
Name
Do-Re-Mi
Degree
Interval
Hz
MIDI #
Cents
Ratio
Off
Octaves
Accidentals
Landmarks

X/Y Pad Assignment PRO

Show X/Y Pad

Dynamic Velocity

Enable Dynamic Velocity
Tap key or curve to audition velocity
Min Velocity (Rim) 39%
Center Deadzone Radius 40%
Velocity Curve

Color Palette

1. Choose Active Color #f59e0b
2. Preview & Paint Keyboard
3. Color Tiers (1-Tap Fill or Pick Directly)
To help diagnose hardware and latency issues, your OS version and device model will be securely attached as diagnostics.

Training Mode

10 / 10
0 / 90

Level Cleared!

Chords: 0 Score: 0 Streak: 0x
+1 Energy Refunded (Flawless Run!)
🎉 Next Level Unlocked!
Hex MIDI
Hex MIDI Pro
Isomorphic Microtonal Keyboard
Unlock MIDI Input & Output
Custom Geometric Layouts
Microtonal & Custom Scales
MPE & Dynamic Velocity
MIDI Control Pads & Presets
Custom Soundfonts SF2 & SF3
Zero Ads & Lifetime Access

Scale & Chord Guide

Off
C Major No ♯ / ♭
Tonic (I) Sub (IV) Dom (V) Rel (vi)
White scale keys Color all in-scale notes as white keys
Scale degrees (1–7) Show scale notes as numbers 1 to 7
Accidentals Note spelling preference
Chord playback
Chord Type (Complexity)
Chord Quality / Constraint