# keyOfMusic vs ScaleJammer

The clearest difference is price: ScaleJammer at Free against keyOfMusic's $0.99. keyOfMusic's advantage is in-app purchases (none vs 1) and iOS requirement (15.2 vs 18.6). On ads and device support there is nothing between them.

ScaleJammer is free to download; keyOfMusic costs $0.99 up front. ScaleJammer sells 1 one-off in-app purchase. keyOfMusic asks for nothing beyond the download.

## The numbers

| Metric | keyOfMusic | ScaleJammer |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/keyofmusic/id6472669515/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | — |
| Monetization | Paid | — |
| Size | 37 MB | 8 MB |
| Requires iOS | **15.2** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jack McCormack](https://appshunter.io/developer/1658121467) | [Orcun Keskin](https://appshunter.io/developer/1681326325) |

## What reviewers say

### keyOfMusic

[App page](https://appshunter.io/ios/app/keyofmusic/id6472669515)

This app provides a virtual piano keyboard to generate musical notes and display corresponding notation. It helps users practice perfect pitch, sight-reading, and understand key signatures, scales, and octaves. It also includes a feature to import and display sheet music images.

**Highlights:** Virtual piano keyboard with note generation, Display musical notation for played notes, Select key signatures, scales, and octaves, Toggle between flats and sharps, Import, save, and display sheet music images, Adjustable sheet music image size

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

**In-app purchases:** none


### ScaleJammer

[App page](https://appshunter.io/ios/app/scalejammer/id6761661432)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ScaleJammer Pro | $4.99 | one-time |


## Frequently asked questions

### Is keyOfMusic free?

keyOfMusic costs $0.99, with no in-app purchases.

### Is ScaleJammer free?

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

### Do keyOfMusic or ScaleJammer have ads?

Neither keyOfMusic nor ScaleJammer shows ads.

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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.*