Chordio: compose & learn music

Chordio: compose & learn music

A companion tool for musicians

8 ratings
38 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • August 4, 2022
  • August 11, 2026

Features

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About

This app is a music composition and theory tool that helps musicians explore chords and scales interactively. It offers features for creating, storing, and rearranging chord progressions, along with integrated music theory lessons and practice tools. It's designed to spark creativity and enhance music learning for producers, composers, and educators.

Chord progression generator
Custom chord creation and editing
Real-time MIDI input visualization
Scales and modes practice
Music theory lessons and quizzes
Sheet music practice tools
Chord Suggestion AI
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What's New in Chordio

3.2.1

August 11, 2026

This update adds a rebuilt Backing Rhythm engine, a new Bassline generator, and Key Cycle practice trainer. Backing Rhythm has been rebuilt with seven professional General MIDI drum kits, including Standard, TR-808, Jazz and Brush. Explore 35+ patterns across Pop, Jazz, Bossa, Salsa, Hip Hop, Trap and more, or create your own beats with the new step editor. You can also import GM drum patterns from your DAW, adjust tempo directly, and easily manage saved patterns. Bassline adds automatic bass accompaniment that follows your chords in real time. Choose from seven styles, five instruments, adjustable complexity, swing, humanization and octave controls, plus eight ready-made presets and custom preset saving. Practice with chords or bass muted independently. Key Cycle takes your progression through all 12 keys using cycles of 4ths, 5ths, half or whole steps, minor thirds, or random movement. Step through keys manually or enable automatic advancement. Active tools such as Backing Rhythm and Bassline are now highlighted in the Tools menu, making it easier to see what's running. Build rhythms, practice progressions, or create full arrangements with more control and flexibility in Chordio.

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In-App Purchases

Free

Free Chord Pack

Free Chord Pack

User reviews

Best of its kind

Chordio is by far the best app of its kind. I use it every day in the studio as a writing tool for work. The creator is also super friendly and passionate and continuing to make it even better. 6/5 stars!

UPDATE

Thanks for the update. I haven't explored it fully yet, but the addition of the hold button alone is a fantastic improvement to Chordio. I have complex software like Synfire/Scaler for theory, but this little app is very usable, and I use it much more than the complex software. It's just so easy to use, has a great interface, chord recognition and much more.
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Constant interruption

What's the point of offering free features if an "upgrade to premium" prompt CONSTANTLY cuts the audio, the MIDI input and interrupts the flow? I can't experience what the app has to offer for more than a minute at a time. I can't record chords ideas because of this. Bad pushy design.

Chordio is the app I’ve been looking for !

What a great app with such a useful set of tools for learning. Connecting to a DAW is so simple too. It also has a good piano sounds but I like going through Ableton live to use my piano of choice while working in Chordio.

Great but not for Germans ;)

Great program, all I ever wanted to show my students keys, scales and chords. But I’m missing a setting for German note names. I read “H” but hear “B,” and I read “Bb” but hear “B.” A solfège setting (e.g., for France or Italy) is also missing. With these features, it would be an instant buy for me. Unfortunately I can’t use it in class this way.
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Developer apps

FAQ

What does Chordio do?

Chordio is a music composition and theory tool designed to help musicians explore chords and scales, create chord progressions, and learn music theory. It offers an interactive experience for discovering new musical ideas and storing your compositions.

What are the key features of Chordio?

Key features include a built-in sequencer and chord progression generator, custom chord editing, real-time MIDI visualization on a Grand Staff, scale and mode practice tools, music theory lessons and quizzes, and sheet music practice functionalities like tempo adjustment and looping.

How much does Chordio cost?

The application is free to download and use, offering a range of features. However, it also includes in-app purchases, suggesting that some advanced features or content might require additional payment.

What are the use cases for Chordio?

Chordio can be used to spark creativity for new songs, learn and practice music theory concepts, experiment with different chord progressions and scales, and even practice playing songs with sheet music tools. It's beneficial for songwriting, music education, and general musical exploration.

Is Chordio compatible with external hardware?

Yes, Chordio can connect to your MIDI controller. When connected, it displays chord names on the Grand Staff in real-time as you play, allowing for a more interactive and immediate composition experience.