# Music Theory 101 vs Chord Trees

The clearest difference is ratings volume: Music Theory 101 at 74 against Chord Trees's 1. Chord Trees's advantage is rating (5.0 vs 4.8). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Chord Trees holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Music Theory 101 has 74 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on November 12, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Music Theory 101 | Chord Trees |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (74 ratings)](https://appshunter.io/ios/app/music-theory-101-study-course/id1629995579/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/chord-trees/id6772963450/reviews)** |
| Number of ratings | **74** | 1 |
| Positive reviews | 82.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 days | Every 5 days |
| Monetization | Free | Free |
| Size | 78 MB | 3 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Poesie Inc](https://appshunter.io/developer/1505664474) | [Jason Zachariah](https://appshunter.io/developer/1896513710) |

## What reviewers say

### Music Theory 101

[App page](https://appshunter.io/ios/app/music-theory-101-study-course/id1629995579)

An interactive music theory training app covering classical fundamentals. It features 19 units with audio, exercises, and definitions, mirroring AP Music Theory exam curriculum. Practice skills with over 90 exercise types.

**Highlights:** Interactive music theory course, 19 comprehensive units, Audio samples and key definitions, Skill practice exercises, AP Music Theory exam curriculum, Over 90 exercise types, Aural recognition and dictation

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Chord Trees

[App page](https://appshunter.io/ios/app/chord-trees/id6772963450)

This interactive tool helps musicians visualize and understand chord connections. Explore harmony, compare instrument voicings, and practice ear training with arpeggio loops. Designed for students, songwriters, producers, and teachers.

**Highlights:** Interactive chord tree visualization, Piano chord inversions, Guitar chord fingerings, Diatonic harmony exploration, Arpeggio loop playback, Multiple instrument sounds

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Music Theory 101 free?

Music Theory 101 is free to download, with no in-app purchases.

### Is Chord Trees free?

Chord Trees is free to download, with no in-app purchases.

### Which has better reviews, Music Theory 101 or Chord Trees?

Chord Trees is rated higher. Music Theory 101 averages 4.8 out of 5 from 74 ratings, while Chord Trees averages 5.0 from 1 ratings.

### Do Music Theory 101 or Chord Trees have ads?

Neither Music Theory 101 nor Chord Trees shows ads.

### Which is updated more often, Music Theory 101 or Chord Trees?

Music Theory 101 ships an update every 5 days, and Chord Trees every 5 days. Most recently, Music Theory 101 was updated on November 12, 2026 and Chord Trees on October 31, 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.*