# Pendulums: Chaos Melody — Chaos Theory + Music Theory > Chaos theory-driven music generator with interactive pendulum physics. (iPhone/iPad app by Soft Brew Mobile.) - Source: https://appshunter.io/ios/app/pendulums-chaos-melody/id6803192958 (this page in markdown: same URL + `.md`) - Developer: [Soft Brew Mobile](https://appshunter.io/developer/561703410) - Category: Music, Utilities - Price: Free with in-app purchases - Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 15.0 · 24 MB - Released: 2026-09-01 - Data updated: 2026-09-06 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/pendulums-chaos-melody/id6803192958/reviews.md ## What is Pendulums? Twin Double Pendulums is more chaotic than my other engine using 2 Lorenz. This is more suited for Oriental music like Koto. The pendulums are released from the same angle, one of them offset by a ten-thousandth of a degree. Both drive a lead voice. While the runs agree the two voices land on the same note, so you hear a single line over a rolled arpeggio. As the gap opens the twin becomes a real second voice, chords swell in behind it, and once the runs have parted for good the whole band is in. Nothing is pre-recorded and nothing loops. Every release is new. THE SONG FORM IS THE PHYSICS There is no bar counter and no scripted arrangement — the piece is however long the pendulums stay together. Their separation is the structure: IN SYNC — lead and twin on the same note, one line over an arpeggio that re-voices itself every bar. DRIFTING — the twin splits into real intervals; chords enter and swell. DIVERGED — bass enters, the grooves open up, the mood engine wakes. Watch it happen: the gap is plotted live on a log scale with the running Lyapunov exponent beside it, so you can see the divergence coming before you hear it. DRAG THE RIG Pull the pendulum round to set the release angle and both twins let go again, from anywhere in the piece. Release it inside about 79 degrees and the motion stays regular, the twins never part, and the solo holds indefinitely — chaos is a regime, not a law, and the scope draws you that boundary while you drag. Outside it, the twin offset sets how long the solo lasts before chaos takes over, though only logarithmically: each extra decimal place buys about the same few seconds again. CHAOS PROPOSES, A POLICY DISPOSES The far bob's position proposes a region of pitches rather than one note. A Markov policy then decides what actually plays, learning from its own output and rewarding intervals that sound consonant. Slide BLEND to choose who wins. WHAT YOU GET • 26 scales — major and minor modes, pentatonics, blues, whole tone, harmonic and melodic minor, altered, both octatonics, and folk scales from Japan, China, Egypt, Spain, Arabia and Hungary • 8 accompaniment styles — chaos grooves, jazz comping with walking bass, stride piano, Alberti bass, classical, arpeggios, oriental rolls, ambient • Four sampled instruments — grand piano, koto, zither and shakuhachi — plus synthesised voices: soft piano, glass, strings, FM bell, AM organ, pluck, fat saw and more • 6 moods on a valence/arousal plane, from serene to tense, driving chord quality, register, tempo and note length • Expression built into the physics: ring, note bend, grace notes, and octave doubling called by the second bob • Live displays — the rig itself, the divergence chart, the note-probability distribution the engine samples from, and the mood point • Record a take and export it as a standard MIDI file to the Files app — lead, twin, chords and bass on separate tracks TWO AUDIO UNITS Pendulums ships as an instrument AUv3 and as a MIDI processor AUv3, so it can either play its own sounds or sequence any other instrument in your host. Lead, twin, chords and bass each send on their own MIDI channel, so one instance can drive four different instruments. Both Audio Units follow your host's transport and tempo — hit play in AUM, GarageBand, Logic, Cubasis or Zenbeats and it locks to the grid, on the bar line, even if you start mid-bar. One install registers both. CREDITS Sampled piano: Salamander Grand Piano by Alexander Holm (CC BY 3.0). Koto and shakuhachi: FluidR3 GM soundfont by Frank Wen (MIT). Zither: đàn tranh from the Versilian Community Sample Library (CC0). ## Key features - Chaos theory-driven music generation - Interactive pendulum physics control - Dynamic song structure based on divergence - 26 diverse musical scales - 8 accompaniment styles - Multiple sampled and synthesized instruments - 6 mood settings - Live visual displays of physics and music ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Unlock AUv3 | $1.99 | one-time | ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/pendulums-chaos-melody/id6803192958/reviews.md ### 5/5 — Pretty wicked. Love the true no-loop generative progressions *2026-09-02* Strangeloop, and Ringo Beats is great too ## Frequently asked questions about Pendulums ### What is Pendulums: Chaos Melody? Pendulums: Chaos Melody is a music generation application that uses the principles of chaos theory and physics to create unique, non-repeating musical pieces. Users can interact with a pendulum system to influence the music's development and structure. ### How does Pendulums: Chaos Melody create music? The app uses a twin double pendulum system where the divergence of the pendulums dictates the song's structure, moving through phases like 'In Sync,' 'Drifting,' and 'Diverged.' This physics-based approach ensures every musical output is original. ### Can I control the music in Pendulums: Chaos Melody? Yes, you can drag the pendulums to set release angles and influence the music's direction. The position of the far bob proposes pitch regions, and a Markov policy selects notes, allowing for user influence on the composition. ### What musical scales and instruments are available in Pendulums: Chaos Melody? The app features 26 scales, including various modes, pentatonics, blues, and folk scales from different cultures. It also offers four sampled instruments (piano, koto, zither, shakuhachi) and numerous synthesized voices. ### Does Pendulums: Chaos Melody have ads? No, Pendulums: Chaos Melody is ad-free, allowing for an uninterrupted creative experience. It is available for free with optional in-app purchases. ### Can I export my music from Pendulums: Chaos Melody? Yes, you can record a musical take and export it as a standard MIDI file to your device's Files app. The export includes lead, twin, chords, and bass on separate tracks. ### What devices is Pendulums: Chaos Melody compatible with? Pendulums: Chaos Melody is designed for iPhone, iPad, and iPod touch devices. It also functions as an Audio Unit (AUv3) instrument. ### How often is Pendulums: Chaos Melody updated? The application was last updated on September 2, 2026, with version 1.0.0. While specific update frequency is not detailed, this indicates recent development activity. ## Version history (last 1 release) ### 1.0.0 — 2026-09-02 No release notes. ## More apps by Soft Brew Mobile - [Enemy Gates Stealth War](https://appshunter.io/ios/app/enemy-gates-stealth-war/id997725011) - [Drive Unlimited](https://appshunter.io/ios/app/drive-unlimited/id1062940454) - [No Robots No Life](https://appshunter.io/ios/app/no-robots-no-life/id6471660488) - [Strange Loop: Chaos Melody](https://appshunter.io/ios/app/strange-loop-chaos-melody/id6795408783) - [Ringo Beats: Chaos Drums](https://appshunter.io/ios/app/ringo-beats-chaos-drums/id6800236177) All apps by Soft Brew Mobile: https://appshunter.io/developer/561703410 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-06.*