Harmonie tonale
Chord analysis, music theory
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
You play a progression, it sounds right, and you could not say why.
Harmonie answers that question, then drills you until the answer comes on its own.
Enter a progression and the app shows what each chord does, its degree, its function, and the cadence that closes the phrase.
WHY, NOT JUST WHAT
Most chord apps name things. This one explains them. Why a borrowed iv darkens the arrival on I. Why a tritone substitution keeps its pull. Why V going to vi leaves the phrase open. The leading tone is named, and so is what it pulls towards.
PRACTICE
Short sets that never repeat. Name a degree, name a cadence, find the key, figure an inversion, count the accidentals in a key signature. Three levels, from three keys to all twenty-four. Every answer is marked and explained.
TRY SOMETHING ELSE
On any chord, the app offers what harmony allows in its place: tritone substitution, secondary dominant, ii-V, borrowed minor subdominant, Neapolitan sixth, interrupted cadence. One tap and you hear the difference.
SEE AND HEAR
A keyboard and a guitar fretboard where the notes of the chord light up. Real staff notation, with the key signature written in order. The circle of fifths, with its neighbours and its relative. Transposition, to compare two keys by ear.
WRITTEN IN ENGLISH, NOT TRANSLATED
The English here was written by hand, in the terms English-speaking theory actually uses. I-vi-ii-V is a rhythm changes turnaround, not a French anatole. V to I in root position is a perfect authentic cadence. V to vi is interrupted, and deceptive is given alongside it, because the two traditions disagree and you may have learned either one.
Note names are a separate setting, independent of the language. Letters by default, syllables if you trained on solfege, and the chord field accepts both.
NOTHING ASKED OF YOU
No account, no ads, no tracking. Analyses, exercises and progress stay on your device, and everything works offline, including on a plane. Only the verification of your purchase goes through our payment provider.
HARMONIE +
The heart of the app is free and will stay free: analysing a progression, practising, listening. Harmonie + adds the why and the memory, meaning the explanations of borrowed chords, secondary dominants and substitutions, French figured bass as a second notation system, and your exercise progress kept from one session to the next.
Monthly or annual subscription, cancellable at any time in your device settings, or a single lifetime purchase. Anyone who bought Harmonie + before this version keeps everything, for good.
Terms of use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy policy: https://app-support-pages.netlify.app/harmonie/
Ratings & Reviews
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Harmonie now speaks English.
And not by translation. The English was written by hand, in the terms English speaking theory actually uses. I-vi-ii-V is a rhythm changes turnaround, not a French anatole. V to I in root position is a perfect authentic cadence. V to vi is an interrupted cadence, with deceptive given alongside it, because the two traditions disagree and you may have learned either one.
Note names are a separate setting, independent of the language. Letters by default, syllables if you trained on solfege, and the chord field accepts both, so you can type "Dm7 G7 C" whichever names you read.
Real staff notation. Chords are engraved properly, with the key signature written in the order of the circle of fifths, ledger lines where they are needed, and seconds offset the way they should be. The clef and accidental outlines come from Bravura, the reference font.
Dark mode, with three settings: follow the system, force light, force dark. Dark is not an inversion of light. It has its own hues, and every contrast has been measured.
A new look. New colours, new type, new logo. The four function colours stay, retuned to the palette: they say the theory, and nothing else borrows them.
The Circle screen now shows where you stand: day streak, success rate, time spent, and a breakdown by topic.
Spanish is here too, written the same way.
A price fix. The lifetime purchase cost less than the annual subscription, which made no sense. That is corrected.
Thank you to everyone who bought Harmonie + before this version: your purchase carries everything added since, and everything to come.
The developer, Aurelien Roblin, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Aurelien Roblin
- Size
- 36.2 MB
- Category
- Music
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 2 more
- English, French, Spanish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Harmonie + mensuel $3.99
- Harmonie + annuel $24.99
- Harmonie + à vie $5.99
- Copyright
- © 2026 Harmonie
