Neo-Riemannian
Music
$2.99 · Designed for iPad. Not verified for macOS.
Also Included In
Interactive tool for exploring Neo-Riemannian Theory — tap chords, apply L/P/R/N/H/S operations, and hear continuous voice leading.
Explore the hidden geometry of chromatic harmony through Neo-Riemannian Theory — an elegant mathematical framework for understanding how major and minor chords connect through smooth voice leading.
TAP ANY CHORD
Touch any of the 24 major and minor triads arranged in the Cube Dance. Watch the chord light up and hear it ring out as a sustained pad.
APPLY TRANSFORMATIONS
Six Neo-Riemannian operations (L, P, R, N, H, S) connect chords by moving one or two voices by a semitone. Each button shows you the target chord before you tap it.
CONTINUOUS VOICE LEADING
The audio engine keeps common tones sustained and moves only the voices that change. Choose from five sound presets: Rhodes, Strings, Choir, Organ, or Synth Pad.
THEORY REFERENCE
The built-in Theory tab explains every operation with voice-movement diagrams, hexatonic cycles, Weitzmann regions, and academic references from Riemann (1893) to Douthett & Steinbach (1998).
Perfect for music theory students, composers, and anyone fascinated by the mathematics of harmony.
Ratings & Reviews
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
- 33.2 MB
- Category
- Music
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
- English and Spanish
- Age Rating
4+
- 4+
- Copyright
- © 2026 Martin Adler
