# Concentric Rhythm

> Music

Canonical page: [https://chrome-stats.com/d/id1188907944](https://chrome-stats.com/d/id1188907944)

## Overview

- **ID:** `id1188907944`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Jeff Holtzkener
- **Category:** Music
- **Rating:** 4.70 / 5 (43 ratings)
- **Version:** 3.0.4
- **Last updated:** 2021-03-04
- **First published:** 2017-02-14
- **Size:** 44 MB
- **Data as of:** 2026-09-23
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/concentric-rhythm/id1188907944)
- **Website:** [https://crashingbooth.wordpress.com/](https://crashingbooth.wordpress.com/)
- **Privacy policy:** [https://crashingbooth.wordpress.com/privacy-policy-for-concentric-rhythm/](https://crashingbooth.wordpress.com/privacy-policy-for-concentric-rhythm/)

## Description

Concentric Rhythm is an interactive tool for generating, developing, and exploring musical patterns. It uses geometric transformations and many other simple processes to create, develop, and evolve music. 

The looping musical timeline is visualized as a circle, which allows you to treat musical patterns as concentric shapes.   This makes performing geometric transformations such as rotations, reflections and folding very natural and intuitive. 
It also provides tools for melodic lines such as random-walk generation and scale-based inversion and transposition.
You can generate rhythmic lines using cross-rhythms or the Euclidean algorithm, and allows for great visualisations of complex polyrhythms.

Concentric Rhythm now allows you to assign each pattern to a different MIDI channel and send your results to other MIDI compatible apps or devices.

Concentric Rhythm was originally developed as a new way to improvise electronic music, but it is also a great tool experimenting with and developing musical material, or just for casually playing with music in a unique, hands-on, way.

Many of the ideas here were inspired by the book ‘The Geometry of Musical Rhythm’ and this app is a powerful tool for anyone who is interested in exploring these ideas.  But at the same time is easy enough to use that anyone (even with no musical or mathematical background) can make interesting musical patterns and think about the musical world a little differently.

Note: There are known compatibility issues when used with AUM, especially on iOS 14

## Rankings

- #184,069 — Overall

## Review summary

Concentric Rhythm is widely praised for its intuitive UI and strong polyrhythm capabilities, including complex sequences and MIDI-out. Users value the visual rhythm feedback and view it as a powerful teaching and performance tool. Recurring concerns include Audiobus 3 interoperability, limited MIDI outputs with confusing IAPs, and occasional stability bugs. It remains a powerful, engaging rhythm tool that shines in rhythm creation and teaching, but would benefit from improved interoperability and reliability.

### Pros

- Intuitive layout and design with strong overall usability
- Powerful polyrhythm and complex rhythm programming capabilities (including 11:13, dotted rhythms)
- MIDI-out/routing support enabling external apps/devices
- Clear visual rhythm feedback that helps users see what's happening rhythmically
- Fun, engaging, and a valuable teaching tool for polyrhythms

### Cons

- Audiobus 3 compatibility/integration is incomplete or not yet supported, with unclear expectations
- Limited MIDI outputs with in-app purchases; pricing and expectations for more outputs are confusing
- Occasional stability issues and bugs (e.g., sound changes with IAA/Audiobus, crashes) that affect reliability

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Source: [Chrome-Stats](https://chrome-stats.com/d/id1188907944)