# PentaMonochord — Pythagoras meets Pentatonic

> Interactive monochord app for exploring pentatonic scales and Pythagorean music theory. (iPhone/iPad app by Lucy Hudson.)

- Source: https://appshunter.io/ios/app/pentamonochord/id1582880506 (this page in markdown: same URL + `.md`)
- Developer: [Lucy Hudson](https://appshunter.io/developer/1179157812)
- Category: Music, Education
- Price: $1.99
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 12.0 · 12 MB
- Languages: American English
- Released: 2022-01-27
- Data updated: 2026-09-11
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/pentamonochord/id1582880506/reviews.md

## What is PentaMonochord?

The Pythagoreans’ foremost innovation was to correlate pitch relationships to calibrated speaking lengths of a string on a monochord. Now, for the first time, there’s an app for that! 

Use IntervalBlocks to build a two-octave G pentatonic scale on the PentaMonochord using only octaves and fifths. Touch any block to see and hear its interval again, and watch the Hertz box to see how the frequencies of the two notes relate inversely to the string lengths represented by the IntervalBlock.

Touch the note labels any time to play a pentatonic tune. Press “Switch to Game” to join the Pythagorean pantheon by building the whole scale with the minimum number of steps. The Intro and the Background Information explain the monochord system in detail, and the Timeline puts it all in perspective.

## Key features

- Build two-octave G pentatonic scales
- Hear and see interval relationships
- View Hertz frequencies and string lengths
- Play pentatonic tunes
- Scale-building game mode
- Background information on monochord system
- Historical timeline


## Frequently asked questions about PentaMonochord

### What is PentaMonochord?

PentaMonochord is a paid music education app that allows users to explore the relationship between pitch and string length using a digital monochord. It focuses on building pentatonic scales and understanding Pythagorean music theory.

### How much does PentaMonochord cost?

PentaMonochord is a paid app priced at $1.99. There are no in-app purchases or subscriptions required beyond the initial purchase.

### What devices does PentaMonochord support?

PentaMonochord is available for iPhone, iPad, and iPod devices. It is designed for iOS users.

### Is PentaMonochord suitable for children?

Yes, PentaMonochord has an age rating of 4+, making it suitable for younger users interested in music and learning.

### Does PentaMonochord have ads?

No, PentaMonochord does not contain advertisements. It is a completely ad-free experience.

### How often is PentaMonochord updated?

The latest version of PentaMonochord was released on January 2nd, 2026, indicating recent development activity. Users can expect ongoing support and potential updates.

### What makes PentaMonochord unique?

PentaMonochord uniquely combines interactive scale building, auditory feedback on intervals and frequencies, and historical context about the monochord system, offering a comprehensive learning experience.

### Can I play tunes with PentaMonochord?

Yes, you can play pentatonic tunes by touching the note labels within the app. This feature allows for direct interaction with the scales you build.

## Version history (last 3 releases)

### 2.0.1 — 2026-01-02

answered new age rating questions

### 2.0.0 — 2024-10-18

-Added iPad capability
-Screen redesigns for clarity
-Small bug fixes

### 1.1 — 2022-01-27

No release notes.

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## More apps by Lucy Hudson

- [5ths Machine](https://appshunter.io/ios/app/5ths-machine/id1582877284)
- [MeanTones](https://appshunter.io/ios/app/meantones/id1582880428)

All apps by Lucy Hudson: https://appshunter.io/developer/1179157812

## Related topics

[pentatone](https://appshunter.io/ios/topics/pentatone)

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*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 2026-09-11.*