# CalmusNotation vs Kalimba Keys

The clearest difference is review sentiment: Kalimba Keys at 100% against CalmusNotation's 0%. Kalimba Keys also leads on rating (5.0 vs 4.4) and iOS requirement (12.0 vs 15.6). CalmusNotation's advantage is price (Free vs $4.99). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

CalmusNotation is free to download; Kalimba Keys costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Kalimba Keys holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 5 and 14 respectively. Written reviews point the same way: 0% of CalmusNotation's written reviews are positive against 100% of Kalimba Keys's.

CalmusNotation ships an update every 4 months, Kalimba Keys every 6 months. The most recent releases landed on October 8, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | CalmusNotation | Kalimba Keys |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | [4.4 (5 ratings)](https://appshunter.io/ios/app/calmusnotation/id993026661/reviews) | **[5.0 (14 ratings)](https://appshunter.io/ios/app/kalimba-keys/id6474580189/reviews)** |
| Number of ratings | 5 | **14** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 6 months |
| Monetization | **Free** | Paid |
| Size | 294 MB | 112 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Erki-tonlist sf](https://appshunter.io/developer/929321904) | [OSC Audio](https://appshunter.io/developer/1693533681) |

## 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


### Kalimba Keys

[App page](https://appshunter.io/ios/app/kalimba-keys/id6474580189)

This app offers a realistic and expressive Kalimba instrument experience with studio-quality sound. It features detailed sampling, a variety of built-in effects, and cross-platform preset management for seamless creativity.

**Highlights:** Individually-sampled Kalimba notes, Multiple Kalimba sound variations, Modulation and Space & Time FX, Adjustable effects order, 35 included presets, Cross-platform preset sharing, Standalone app and AUv3 compatibility

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

**In-app purchases:** none


## Frequently asked questions

### Is CalmusNotation free?

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

### Is Kalimba Keys free?

Kalimba Keys costs $4.99, with no in-app purchases.

### Which has better reviews, CalmusNotation or Kalimba Keys?

Kalimba Keys is rated higher. CalmusNotation averages 4.4 out of 5 from 5 ratings, while Kalimba Keys averages 5.0 from 14 ratings.

### Do CalmusNotation or Kalimba Keys have ads?

Neither CalmusNotation nor Kalimba Keys shows ads.

### Which is updated more often, CalmusNotation or Kalimba Keys?

CalmusNotation ships an update every 4 months, and Kalimba Keys every 6 months. Most recently, CalmusNotation was updated on October 8, 2026 and Kalimba Keys on October 9, 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.*