# Music Theory Notes vs Trapezoid

The clearest difference is update cadence: Trapezoid at every 9 days against Music Theory Notes's every 36 months. Trapezoid also leads on price ($1.99 vs $2.99) and iOS requirement (10.0 vs 26.0). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Music Theory Notes costs $2.99 and Trapezoid $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Music Theory Notes against 5.0 for Trapezoid. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Music Theory Notes ships an update every 36 months, Trapezoid every 9 days. The most recent releases landed on October 14, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Music Theory Notes | Trapezoid |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/music-theory-notes/id1017426555/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/trapezoid-pocket-dulcimer/id1069508662/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 36 months | **Every 9 days** |
| Monetization | Paid | Paid |
| Size | 39 MB | 46 MB |
| Requires iOS | 26.0 | **10.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Patrick Q. Kelly](https://appshunter.io/developer/310068987) | [Michael Eskin](https://appshunter.io/developer/342739369) |

## What reviewers say

### Music Theory Notes

[App page](https://appshunter.io/ios/app/music-theory-notes/id1017426555)

Learn to recognize and notate musical pitches by sight or sound. Practice with various clefs and customizable note ranges. Includes a grade book to save and share quiz results.

**Highlights:** Pitch recognition by sight and sound, Piano keyboard and staff notation, Treble, Alto, Tenor, and Bass clefs, Ear training mode, Customizable note range, Printable grade book

**In-app purchases:** none


### Trapezoid

[App page](https://appshunter.io/ios/app/trapezoid-pocket-dulcimer/id1069508662)

This virtual instrument accurately simulates the sound and playability of a hammered dulcimer. It offers multiple tuning options, drag roll effects, and MIDI compatibility for a realistic musical experience. Designed for both beginners and experienced players, it fits right in your pocket.

**Highlights:** Authentic hammered dulcimer sound, Standard and Michigan tunings, Drag roll effects, MIDI keyboard compatibility, Velocity sensitive MIDI input, Note name display

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Music Theory Notes free?

Music Theory Notes costs $2.99, with no in-app purchases.

### Is Trapezoid free?

Trapezoid costs $1.99, with no in-app purchases.

### Which has better reviews, Music Theory Notes or Trapezoid?

Music Theory Notes and Trapezoid are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do Music Theory Notes or Trapezoid have ads?

Neither Music Theory Notes nor Trapezoid shows ads.

### Which is updated more often, Music Theory Notes or Trapezoid?

Music Theory Notes ships an update every 36 months, and Trapezoid every 9 days. Most recently, Music Theory Notes was updated on October 14, 2026 and Trapezoid on October 21, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*