Chordio for iPhoneOS

Chordio for iPhone

Master Chords and Scales Effortlessly

Looking for a spark for your upcoming song?
Introducing Chordio, an essential composition tool that helps you explore chord progressions while offering a fun and interactive approach to learning music theory.

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Download Chordio for iPhoneOS on Apple App Store

A composition and music theory app

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Compose Music

Chordio empowers musicians at every skill level to deepen their knowledge of chords, scales, and unleash their creativity in a user-friendly and interactive way.


Teaching tool

Instantly display notes and chords while playing playing a connected MIDI keyboard, and observe chord names and notes on the Grand Stave in real-time.


Learn Scales & Modes

Access a vast collection of musical scales, practice them using the built-in metronome, and adjust the tempo to your preference.


Chord Catalog

Build your own library of chord progressions or choose from a diverse range of Chord Packs. Easily edit, rearrange, transpose, or duplicate chords.


Share ideas with friends

Share chord progression or distinctive chord voicings ideas with friends using AirDrop or export MIDI files to your favorite DAW (Digital Audio Workstation).


Progression Generator

Utilize the built-in chord generator tools to discover harmonious chord combinations that sound great together.

Composition Workspace

Compose music effortlessly with Chordio — a powerful tool that enables you to delve into chords, chord progressions, and create captivating ideas. Whether you're a novice or a seasoned musician, Chordio caters to your needs, providing a seamless and interactive platform to grasp musical arrangements and ignite your creative spark.

Video Tutorials

Chordio create Chord Progressions Workspace

Scales Workspace

Discover the vast array of musical scales with Chordio, enabling you to embark on a journey of exploration.

Unleash your potential by mastering scales, whether it's to excel in exams, refine your playing and improvisation skills, or deepen your understanding of music theory.

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Chordio Learn Music Scales Workspace

Modes Workspace

The Modes Workspace features an Interactive Circle of Fifths tool to help visualise scales, notes, chords and keys as well as the relationship between them. Select a Mode and rotate the wheel in a clockwise or counter-clockwise direction.

The areas with the same colors indicate chords closely related to one another and can work well together in a song. Tap on any note in the music stave to hear and highlight it. You can use this to help students learn music online.

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Chordio Learn Music Modes Workspace

Lessons Workspace

Practice makes perfect. Learn how to play a musical piece at your own pace. Lessons can be slowed down or pitch changed to suit your needs. You can even scroll a music passage and capture the chords.

Video example

Chordio Music At your own pace Workspace

Connect a MIDI Keyboard

You can connect a compatible USB MIDI keyboard device to your iPhone and use it to play Instruments, practice scales or solo over a chord progression.

Chords and note names are displayed on the Grand Stave in real-time.

Download the Chordio App

Chordio connected to a MIDI Keyboard

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