Negative Harmony
Music
$2.99 · Designed for iPad. Not verified for macOS.
Also Included In
Transform any chord into its negative harmony mirror. Used by Jacob Collier, rooted in Hugo Riemann's theory. Now in your pocket.
Negative Harmony lets you explore one of music theory's most fascinating transformations: reflecting any chord or progression across a tonal axis to produce its harmonic mirror image.
TAP ANY CHORD
Select a root and quality on the interactive Circle of Fifths. See the original chord and its negative simultaneously, with voice-leading automatically applied.
BUILD PROGRESSIONS
Add chords to a progression and play them back — originals or negatives — with smooth voice leading between every chord. Common tones are held, not re-attacked.
UNDERSTAND THE THEORY
Built-in theory section explains the concept from first principles: the axis, the transformation formula, voice leading, and the history from Hugo Riemann to Jacob Collier.
5 SOUNDS
Choose from Rhodes, Strings, Choir, Organ, or Synth Pad — the same high-quality soundfont used by professional music apps.
MULTILINGUAL
Full support for English, Spanish, French, German, Italian, and Portuguese.
Ratings & Reviews
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The developer, Martin Adler, 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 Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Martin Adler
- Size
- 33.1 MB
- Category
- Music
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 5 more
- English, French, German, Italian, Portuguese, Spanish
- Age Rating
4+
- 4+
- Copyright
- © 2026 Martin Adler

