Chordio: compose & learn music

Chordio: compose & learn music

A companion tool for musicians

8 ratings
39 reviews
Free
In-App Purchases

Details

Released
August 4, 2022
Updated
November 3, 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

3.2.8

November 3, 2026

Print your chord charts your way Piano Chord Chart PDFs now have a Print Options screen. A live preview updates as you make changes: • Choose any header colour, including white for a clean, ink-friendly look • Pick the highlight colour for keys, or match your Keyboard Settings • Set the header height to Compact, Medium or Regular • Start from a Quick Style: Classic, or Ink Saver to use less printer ink Chordio remembers your choices for next time. Improvements and fixes • Fixed a crash that could happen during Lessons playback • Keyboard octave labels no longer jump to the wrong octave after you play notes or scales Many of these improvements came straight from your suggestions, so thank you for your feedback. If you enjoy Chordio, a rating or review on the App Store helps a lot.

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Subscriptions & In-App Purchases

Free

Free Chord Pack

Free Chord Pack

User reviews

Lovely

I have been using Chordio for a while now after the previous app I was using became problematic. Chordio has been rock solid. I only have one request. In addition to having Chordio as a stand alone app, it will be nice to have it as a plugin

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.

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.