# CalmusNotation vs ChordBaker

The clearest difference is rating: ChordBaker at 5.0 against CalmusNotation's 4.4. ChordBaker also leads on update cadence (every 2 days vs every 4 months). CalmusNotation's advantage is in-app purchases (none vs 5). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. ChordBaker sells 5 in-app purchases, starting at $0.99 per month. CalmusNotation asks for nothing beyond the download.

ChordBaker holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 5 and 3 respectively.

CalmusNotation ships an update every 4 months, ChordBaker every 2 days. The most recent releases landed on June 5, 2026 and September 4, 2026 respectively.

## The numbers

| Metric | CalmusNotation | ChordBaker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (5 ratings)](https://appshunter.io/ios/app/calmusnotation/id993026661/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/chordbaker/id6748584837/reviews)** |
| Number of ratings | **5** | 3 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 294 MB | 41 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Erki-tonlist sf](https://appshunter.io/developer/929321904) | [Tomas Ferrari](https://appshunter.io/developer/1593882613) |

## What reviewers say

### CalmusNotation

[App page](https://appshunter.io/ios/app/calmusnotation/id993026661)

Create and visualize musical compositions using AI-powered graphical notation. This app leverages advanced AI, inspired by NASA's Lisp programming, to generate original music based on user input and can display music from other compatible apps for live performance.

**Highlights:** AI-powered music composition, Graphical notation display, Real-time performance visualization, Lisp-based AI engine, User input-driven music creation, Integration with CalmusComposer and CalmusPlay

**In-app purchases:** none


### ChordBaker

[App page](https://appshunter.io/ios/app/chordbaker/id6748584837)

Create accurate, harmony-focused chord charts quickly for songwriting, teaching, or learning music. Features advanced notation, key analysis, and instant transposition. Export to PDF or share editable files.

**Highlights:** Build chord charts quickly, Harmony-first workflow, Advanced chord notation, View chord tones and degrees, Instant transposition, Export to PDF, Share editable files

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ProMonthly | $0.99 | per month |
| ProYearly | $8.99 | per year |
| Johann Sebastian | $19.99 | per month |
| Johann Sebastian | $199.99 | per year |
| ProLifetime | $49.99 | one-time |


## Frequently asked questions

### Is CalmusNotation free?

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

### Is ChordBaker free?

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

### Which has better reviews, CalmusNotation or ChordBaker?

ChordBaker is rated higher. CalmusNotation averages 4.4 out of 5 from 5 ratings, while ChordBaker averages 5.0 from 3 ratings.

### Do CalmusNotation or ChordBaker have ads?

Neither CalmusNotation nor ChordBaker shows ads.

### Which is updated more often, CalmusNotation or ChordBaker?

CalmusNotation ships an update every 4 months, and ChordBaker every 2 days. Most recently, CalmusNotation was updated on June 5, 2026 and ChordBaker on September 4, 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.*