# KeyMorph vs ChordMaster

The clearest difference is in-app purchases: KeyMorph at none against ChordMaster's 3. KeyMorph also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. ChordMaster sells 3 in-app purchases, starting at $7.99 per month. KeyMorph asks for nothing beyond the download.

KeyMorph ships an update every 3 weeks, ChordMaster every 11 days. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | KeyMorph | ChordMaster |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/chordmaster-learn-and-train/id6777138096/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 11 days** |
| Monetization | — | Free with in-app purchases |
| Size | 31 MB | 27 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Omni Devs](https://appshunter.io/developer/1830893808) | [Thanh Nguyen](https://appshunter.io/developer/6776693838) |

## What reviewers say

### KeyMorph

[App page](https://appshunter.io/ios/app/keymorph-music-transposition/id6749544555)

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

**In-app purchases:** none


### ChordMaster

[App page](https://appshunter.io/ios/app/chordmaster-learn-and-train/id6777138096)

This app is a comprehensive music tool for learning instruments, understanding harmony, and practicing effectively. It offers an interactive chord library, song creation features, and music theory exploration. Practice chord changes, identify notes, and train your ear with various exercises.

**Highlights:** Interactive chord library with instrument diagrams, Advanced search and analysis for chord identification, Creative song book with custom accompaniment patterns, Pro training for chord changes and ear training, Music theory exploration with Circle of Fifths, Multi-instrument support (Guitar, Piano, Ukulele, Bass)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ChordMaster Pro Monthly | $7.99 | per month |
| ChordMaster Pro Yearly | $39.99 | per year |
| ChordMaster Pro Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is KeyMorph free?

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

### Is ChordMaster free?

ChordMaster is free to download, with in-app purchases available.

### Do KeyMorph or ChordMaster have ads?

ChordMaster shows ads; KeyMorph does not.

### Which is updated more often, KeyMorph or ChordMaster?

KeyMorph ships an update every 3 weeks, and ChordMaster every 11 days. Most recently, KeyMorph was updated on November 8, 2026 and ChordMaster on November 5, 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.*