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App Store Apps > Music > Chordio: compose & learn music
Chordio: compose & learn music icon

Chordio: compose & learn music

by One In A Billion Ltd · Music · Free
On the App Store since August 2022 · Data updated 2026-10-27

Chordio: compose & learn music is made and published by One In A Billion Ltd. AppBrain is an independent app data site and isn't affiliated with One In A Billion Ltd. The app name, icon, screenshots and description belong to One In A Billion Ltd and are shown as published on the App Store.

AppBrain's verdict

Rating on App Store
4.38
8 ratings
Last updated
October 19, 2026

It doesn't have enough ratings yet to judge what users think.

Official page on the App Store

Rankings

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Releases

Updates seen on the App Store
Version
3.2.7
Launched
August 2022

No changelog data

User feedback

Ratings and reviews on the App Store

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Technology

Found in the app by AppBrain
Price
Free
App size
202.5 MB
Content rating
Everyone

Technologies used by Chordio: compose & learn music

About the app and developer

About Chordio: compose & learn music

Chordio: compose & learn music is a music app developed by One In A Billion Ltd.

User Ratings

Chordio: compose & learn music is rated 4.38 out of 5 stars. The rating is based on 8 ratings.

App Information

Chordio: compose & learn music is freely available from the App Store. The app size is 202.54 MB. The latest version available is 3.2.7. The last update was on October 19, 2026.

Technical Requirements

The app has a content rating of Everyone. The app has been available on the App Store since August 2022.

Developer information for One In A Billion Ltd

One In A Billion Ltd

Address:

Frequently asked questions about Chordio: compose & learn music

Is Chordio: compose & learn music free?

Yes. Chordio: compose & learn music is free on the App Store.

Is Chordio: compose & learn music still available?

Yes. Chordio: compose & learn music is on the App Store, and the last update we saw was on October 19, 2026.

How large is Chordio: compose & learn music?

Chordio: compose & learn music is 202.54 MB.

Is Chordio: compose & learn music suitable for children?

App Store rates the content of Chordio: compose & learn music as suitable for everyone.

How do people rate Chordio: compose & learn music?

Chordio: compose & learn music scores 4.38 out of 5 stars, from 8 ratings on the App Store.

Who made Chordio: compose & learn music?

Chordio: compose & learn music was developed by One In A Billion Ltd. It is listed in the music category on the App Store.

What are the best alternatives to Chordio: compose & learn music?

People looking at Chordio: compose & learn music also look at these music apps: Progressions, SessionBand Soul Jazz Funk 1, PolyNome Pro: Drum Sequencer, Cornflower, FAC Drumkit.

Share Chordio: compose & learn music

Store listing

By One In A Billion Ltd, from the App Store
Description by One In A Billion Ltd Written by the developer, not by AppBrain. Click to read.
Looking for a spark for your upcoming song?

Introducing Chordio, a powerful tool for composition and music theory that offers an enjoyable and interactive experience. This app allows you to explore chords and scales in a fun and engaging way. It also provides a convenient platform for storing all your distinctive musical chord progressions in a single location. As a result, Chordio becomes an indispensable resource for contemporary music producers, composers, and educators.

Take your music theory knowledge to the next level and create innovative chord progressions for your latest composition. With a range of internal sounds included, you can explore the tool's features without needing any other external equipment.

Connect your MIDI controller to Chordio and see chord names appear on the Grand Staff in real-time as you play. Solo over chord progressions using the built-in sounds, and quickly rearrange or transpose chord progressions on the fly for added flexibility.

Uncover fresh chord sequences for any genre - from hip hop to house and everything in between. Simply drag and drop them into your DAW!

Chordio empowers you to unleash your creativity and take your music to new heights.

The main features are divided into four workspaces:

Composition

• Build-in sequencer to create chord progressions.
• Build-in Chord progression generator.
• Create custom chords, edit existing chords, get chord inversions, and extended chords.
• Drag & Drop to change the song structure.
• Transpose the entire chord progression with a single tap.
• Create a playlist of custom chord progressions.
• Chord Suggestion AI – Get intelligent chord recommendations that fit your existing progression, and seamlessly integrate them into your composition.
• A Chord Types & Vocings panel helps you generate new chords.
• Play-along with a backing rhythm track.
• Save/load songs, export it as MIDl.
• Download chord progressions from a growing collection of Chord Packs.

Scales

• Practice scales with a metronome in all keys.
• Contains more than 40 scales you can work with.
• Staff view for chords and scales.

Modes

• Interactive way to learn what scales are associated with each mode.
• Practice modes in Chordio.
• Change tonic, mode, and layout to discover the relationship between musical notes, chords, and scales.

Music Theory

* In-app theory lessons.
• 3 New Music Theory Quizzes: Note Identification, Interval Recognition & Chord Identification.

Sheet Music

• Adjust the Tempo: Practice at your own speed.
• Loop Key Sections: Focus on tricky parts with ease.
• Practice Hands Separately: Work on left or right hand independently.
• Play in Any Key: Transpose sheet music to suit your preference.
• Customize Tracks: Adjust instrument volumes.
• Jazz Solo: Jam over chord progressions.
• Print Your Scores: Print a PDF version of the score for flexible, hands-on practice.

Lessons

• Learn to play songs at your own pace.
• Download music from a growing collection of Lesson Packs.
• Lessons can be slowed down or pitch changed.


KEY FEATURES:

• MIDI keyboard support.
• Build progressions using the chord generators.
• Export MIDI to your DAW or sequencer.
• Custom chords, edit existing chords, get extended chords.
• Play internal sounds.
• Arpeggio, strum and performance modes.
• Mac version include a detachable resizable Grand Staff, Chord Display, and Keyboard Views.
• Customise the Keyboard highlight color.
• Select chord, to display a range of related scales and chords.
• Tap a note on the Grand Staff to highlight it with a color.
• Choose from selection of backing rhythms that fit specific genres.
• Chord Pattern playback

Always backup your chord progressions!
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