# SetClass

> Pitch Class Set Explorer

Canonical page: [https://chrome-stats.com/d/id6785144247](https://chrome-stats.com/d/id6785144247)

## Overview

- **ID:** `id6785144247`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Martin Adler
- **Category:** Music
- **Version:** 1.0.1
- **Last updated:** 2026-09-20
- **First published:** 2026-07-01
- **Size:** 88 MB
- **Data as of:** 2026-09-24
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/setclass/id6785144247)
- **Website:** [https://martoadler-bit.github.io/setclass](https://martoadler-bit.github.io/setclass)
- **Privacy policy:** [https://martoadler-bit.github.io/setclass/privacy](https://martoadler-bit.github.io/setclass/privacy)

## Description

Explore pitch class sets: Forte numbers, prime forms, interval vectors, transformations and more. Now with a rebuilt set class table and a smarter Finder.

SetClass is an interactive tool for exploring Pitch Class Set Theory — the analytical framework behind atonal and post-tonal music, from Schoenberg and Webern to contemporary composers.

BUILD & HEAR
Tap notes on the chromatic wheel to construct any chord, scale, or pitch collection. Hear it instantly with a jazz piano soundfont or built-in synthesizer.

EXPLORE THE THEORY
• Normal form, prime form, and Forte number for every set
• Interval vector analysis
• Transpositional and inversional symmetry
• Z-relation detection

TRANSFORM
Apply serial operations: transposition (T0–T11), inversion, retrograde, retrograde inversion, and multiplication (M5, M7, M11). Watch the geometry change in real time.

COMPOSE & SEQUENCE
• Sequencer: build rhythmic patterns with serial transformations, arpeggios, swing, gate, and glide
• Melody Generator: create melodic lines with contour control (free, rising, falling, arch)
• Morph: blend smoothly between two sets with optional portamento
• Export to MIDI or MusicXML

FIND & GENERATE
• Set Finder: enter any melody or chord and identify the pitch class set inside
• Generator: produce sets by cardinality, symmetry (mirror, symmetric), and density

LEARN
Built-in theory reference covering pitch classes, normal form, prime form, interval vectors, Forte numbers, transposition, inversion, retrograde, symmetry, Z-relation, set class, morphing, and serial technique — with musical examples from Debussy, Schoenberg, Bartók, Webern, Berg, Stravinsky, and Messiaen.

Available in English, Spanish, French, Italian, German, and Chinese.

## Rankings

- #1,147,222 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6785144247)