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
  • July 23, 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

3.1.9

July 23, 2026

What's New Compose, practise, and perform more naturally with new tools designed to make learning and creating music faster than ever. Chord Pads Play and audition your chord progressions instantly with the new Chord Pads in the Composition workspace. Simply tap any chord to hear it played back while the corresponding notes are highlighted on the on-screen keyboard. Experiment with different progressions, compare harmonies, and develop ideas more quickly without needing to play every chord manually. Easier Transposition A new Transpose control is now available directly from the Sheet Music toolbar. Use the simple plus and minus controls to transpose any piece instantly without navigating through menus, making it easy to find the perfect key for your voice, instrument, or practice session. Live Key Updates As you transpose, Chordio automatically displays the new key in real time, while the sheet music updates its key signature to match. This provides immediate visual feedback and ensures your notation always stays accurate. Improved Key Detection Sheet music now detects and displays the correct key more intelligently, resulting in cleaner, more readable notation with fewer unnecessary accidentals. Faster Workflow We've streamlined the interface to help you stay focused on making music. Simply tap anywhere on the sheet music to dismiss the volume controls and continue playing without interruption. Guided Tour Refresh The in-app guided tour has been updated to make it easier for new users to discover Chordio's features and get started more quickly. Performance and Stability We've made a range of performance improvements, interface refinements, and bug fixes throughout the app to deliver a smoother, more reliable experience. Thank you for using Chordio. We're continually improving the app based on your feedback, and we'd love to hear what you think.

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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.