Composition
Catch the idea before it goes.
Build progressions from chords and voicings, hear them play back, and watch the grand staff fill in as you go.
FOR IPHONE A dedicated iPhone app
— built for the phone in your pocket
Chordio+ Master chords and scales effortlessly.
Looking for a spark for your next song? Chordio+ is a dedicated iPhone app for composition and theory — explore chord progressions, scales and modes in a fun, interactive way, wherever you are.
Chordio+ for iPhone — build a progression, hear it back, see every note.
A composition and music theory app
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For musicians
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producers
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songwriters
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Wherever creativity strikes
Take a look inside
A composition studio that fits in your pocket
The same workspaces you know from the Mac and iPad, rebuilt for a phone you can hold in landscape and play with both thumbs.
Scales
Every scale, in your pocket.
Explore a vast collection of scales, practise against the metronome, and set the tempo wherever you happen to be.
Modes
The circle of fifths, on a phone.
Pick a mode and rotate the wheel. Similar colours show which chords sit close together in the key.
Lessons
Practise a bar at a time.
Slow a lesson down or shift its pitch, scroll through any passage, and capture the chords you want to learn.
Composition Workspace
Compose music effortlessly.
Delve into chords, chord progressions and create captivating ideas. Whether you're a novice or a seasoned musician, Chordio provides a seamless, interactive platform to spark your creativity.
- Build progressions from chords and voicings
- Interactive playback to hear your ideas
- Grand staff notation as you compose
- Great for every level, novice to pro
MIDI keyboard
Play a chord. See its name instantly.
Connect a compatible USB MIDI keyboard to your iPhone to play instruments, practise scales or solo over a chord progression. Chords and note names appear on the grand staff in real time, enhancing both performance and learning.
- Real-time chords and note names on the grand staff
- Practise scales or solo over a progression
- Play instruments straight from your keyboard
- Great for performance and learning alike
Features
Everything you need to write and learn music
Discover the scales behind the music.
Unleash your potential by mastering scales — whether to excel in exams, refine your playing and improvisation, or deepen your understanding of music theory.
Visualise how every key connects.
The Modes Workspace features an interactive circle of fifths for visualising scales, notes, chords and keys. Select a mode and rotate the wheel either way.
Chord catalog
Build a personal library of progressions or start from our Chord Packs. Edit, rearrange, transpose or duplicate chords with ease.
Share ideas with friends
Send your chord progressions by AirDrop, or export MIDI files straight into your DAW.
Progression generator
Use the built-in generator to discover harmonious chord combinations that work beautifully together.
A teaching tool in your pocket
Display notes and chords in real time from a connected MIDI keyboard — chord names and notes appear on the grand staff as they're played.
Built just for iPhone
Chordio+ is its own app, designed around a phone screen and one-handed use — not a shrunk-down desktop layout.
Lessons Workspace
Practise pieces at your own pace.
Lessons can be slowed down or have their pitch changed to suit your needs. Scroll through any music passage and capture the chords you want to master.
- Slow it down or change the pitch of a lesson
- Scroll any passage and follow along
- Capture chords you want to learn
- Learn at your pace, one bar at a time
6
Powerful features
40+
Scales to explore
MIDI
Export to any DAW
Free
To download
Everywhere you write
Start in your pocket. Finish in the studio.
Chordio+ is the iPhone app. Chordio for Mac and iPad is a separate universal app — one purchase covers both.
Mac
The full studio: resizable split views, MIDI drag-and-drop into your DAW, and every workspace on one screen.
Chordio for Mac
iPad
Touch the staff, drag chords with a finger, and prop it on the music stand next to a real piano.
Chordio for iPad
iPhone
Chordio+ — a dedicated app for the phone in your pocket, so an idea never gets away.
You're hereCompose on the go.
Download Chordio+ free on the App Store and start writing music wherever creativity strikes.