Learn › Choosing a Music Theory App That Actually Sticks
New Released in April 2026
Choosing a Music Theory App That Actually Sticks
A music theory app works best when it makes you play, not just tap answers. Theory sticks when the idea, the sound and your hands meet. Here is what to look for, written by the team behind ChordRunner, so read it knowing it is our app.
No account, no download. The demo has limited content. Advanced features are in ChordRunner Premium.
- MIDI keyboard
- Digital or acoustic piano
- Guitar
- Computer, phone or tablet
Five things to look for
- Real instrument input: a MIDI keyboard or a microphone for piano and guitar.
- Chords in a key, not only isolated facts.
- Ear training linked to what you play.
- Levels that add new ideas only when the old ones are solid.
- Short sessions you will repeat daily.
What ChordRunner covers
Chord types from triads to 13ths in all 12 keys, chords that stay inside a key and scale you pick, your own progressions on loop, ear training where you hear and play back, single notes in any octave and sight reading on a real staff. It runs in Chrome or Edge with a MIDI keyboard, a piano or guitar through the microphone, or an on-screen keyboard.
Choosing a Music Theory App That Actually Sticks
ChordRunner is a browser game that teaches piano and guitar chords: a chord appears on screen, you play it on a real instrument, and your runner jumps.
Play the demoWhat it does not cover
It is not a textbook: there are no long written lessons and no exam-board syllabus. Pair it with a good theory book or teacher for the explanations, and use the game to make them automatic.
For guitarists
The game shows chord symbols, not fretboard diagrams, and listens to your guitar through the microphone. That makes it a theory app for guitar that tests chords in a key and progressions on the real instrument.
The levels in ChordRunner
- Beginner: major, minor, augmented and diminished chords.
- Intermediate: adds sus2 and sus4.
- Advanced: adds 6th, 7th and 9th chords.
- Pro: adds 11th, 13th and altered chords; an adaptive mode adds the next family when you are ready.
Common questions
What is the best music theory app?
The one that uses your real instrument and tests what you learn by ear and by hand. For chords, keys, ear training and reading, ChordRunner is our answer.
Is there a music theory app for guitar?
Yes. ChordRunner listens to your guitar through the microphone and tests chords, keys and progressions on the instrument.
Can an app teach music theory alone?
An app is great for practice and drills. For the explanations behind the rules, a book or teacher still helps.
Which instruments work?
A USB MIDI keyboard, detected automatically, or a piano or guitar through the microphone. Everything runs in Chrome or Edge on a computer, tablet or phone.
How is this different from apps where you tap the screen?
Tapping trains your eyes and fingers on glass. Here you press real keys or fret real strings, and the game hears the actual notes, so what you practise is exactly what you will play on your instrument.
Is everything in the demo?
The demo has limited content. Advanced features are in ChordRunner Premium.
Your instrument is the controller.
ChordRunner is a browser game that teaches piano and guitar chords: a chord appears on screen, you play it on a real instrument, and your runner jumps. MIDI keyboard or microphone, both work.
Try the demoKeep learning
Music Theory Games: Chord Theory You Play
Music theory games where you play the answer: chord qualities, symbols, 7ths, extensions and chords in a key, …
Ear Training with Your Hands on the Keys
Ear training with your instrument, not buttons. Hear a chord, play it back on a MIDI keyboard or into your mic…
The Piano Chord App You Play on Your Real Keyboard
A piano chord app that hears your real keyboard: every chord from triads to 13ths in all 12 keys, instant feed…
Guitar Chords App That Hears Your Guitar
A guitar chords app in your browser: a chord appears, you strum it and the microphone recognises it. Levels fr…
Chord Training That Feels Like a Game
Interactive chord training in your browser. Play major, minor, 7th and extended chords on a MIDI keyboard or a…
Master All 12 Major Chords on Piano
Every major chord on piano with notes and fingering, plus an interactive game that drills all 12 until they ar…