Every chord, spelled right.

A chord reference for piano and guitar. Pick a key and a chord, and every view follows: the circle of fifths, the keyboard, the fretboard and the staff.

Coming soon to theApp Store

For iPhone, iPad and Mac.

One key, one chord, seven views

Everything on screen reads from the same two choices.

Chord Therapy is a stack of panels. Set the key or the chord anywhere, from the wheel, a card, a typed name or the keys of the piano, and every panel updates at once. Show the ones you use, in the order you want.

♪

A key and a chord

The two selections every panel shares. Change either one and the whole screen follows.

◎

Circle of fifths

Major keys outside, relative minors inside, and the key signature in the middle.

I

Key

The scale and its seven chords, with numerals, degree names and relatives.

Δ

Chord

Names, spells and plays the chord. Type a chord name, or type notes to get one.

ii

Progressions

Saved as scale steps, so changing the key transposes and re-spells them.

𝄞

Notation

The chord, or the whole progression, written on a grand staff.

▥

Piano

See the chord on the keys, or tap notes and press Identify to name them.

♯

Guitar

Playable fingerings for every chord type, searched on the neck in eight tunings.

Circle of fifths

See where you are.

The keys arranged in fifths, with the one you have chosen lit and its key signature written in the middle. Tap a ring to move to a new key; the chord moves to its tonic with it.

Both spellings are named at the two enharmonic positions, so F♯ and G♭ are each there when you need them.

The circle of fifths panel, with C major selected

Key

Seven chords, one tap each.

Major, the three minors and every mode. Each degree gets a card with its numeral, chord, stack of thirds and name, from tonic to leading tone. Switch between triads and sevenths, then jump to the relative or parallel key.

The pentatonic and blues scales on the same tonic sit underneath.

The Key panel for C major, showing the scale and its seven triads

Spelling

Notes are spelled, not numbered.

F♯ and G♭ are different notes in Chord Therapy. Every scale and chord is built letter by letter, so F♯ major ends on E♯, not on a stray F. Type A♭7 in a sharp key and it stays A♭7 everywhere on screen.

F♯ major
F♯G♯A♯BC♯D♯E♯
Not this
F♯G♯A♯BC♯D♯F

Progressions

Write it once, play it in any key.

A progression stores scale steps rather than fixed roots, so changing its key transposes the whole thing and the numerals stay right. Chords from the key change quality with it; a borrowed chord keeps its sound, and a pinned one stays exactly where you put it.

Six starters are included, from I–V–vi–IV to a 12-bar blues. Play any progression on piano or strummed guitar, or write it out on the staff.

In C major
IC VG viA− IVF
In C minor
iC− vG− ♭VIA♭ ivF−

Two ways in

Know the name? Or just the notes?

Type a chord name in jazz or plain notation and it is selected. Type the notes you are holding and Chord Therapy names them, reading the first note as the bass, so an inversion comes back as a slash chord.

On the piano, tap the keys and press Identify. 52 chord types, from power chords to thirteenths.

Type a name
Cm7b5→Cø7
Type the notes
E G C→C/E
Or these
F# A C# E→F♯−7

Guitar

Shapes for every chord, in your tuning.

There is no chart behind the Guitar panel. Fingerings are searched on the neck for whatever chord and tuning you choose, with finger numbers, open and muted strings and barres where a hand needs them.

StandardDrop DHalf step downWhole step downDrop COpen GOpen DDADGAD
Colour means one thing

On the piano and the guitar alike, blue is a note in the key and amber is one outside it. A ring marks the root. On the staff, an outsider is written in red.

Sound

Every note is a recording of a real instrument: a grand piano and a Spanish classical guitar, in a small room.

Yours, on every device

No account. No ads. Nothing collected.

Chord Therapy runs entirely on your device. Sign in to iCloud and it keeps your iPhone, iPad and Mac in step by itself.

Progressions travel

Write one on the phone and it is on the Mac when you open it.

Settings travel too

Your key, chord, panels and volume follow you, one setting at a time, so a change on one device never undoes a different change on another.

Private by design

Sync goes through your own iCloud account. We never see your data, and the app has no analytics or tracking.

Works offline

Nothing is looked up online. Signed out of iCloud, everything still works on that device.

Chord Therapy app icon

Chord Therapy

For iPhone, iPad and Mac. A full user guide is on the support page.

Coming soon to theApp Store