# KeyScroll vs KeyJ

The clearest difference is in-app purchases: KeyScroll at none against KeyJ's 1. KeyJ's advantage is device support (4 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. KeyJ sells 1 in-app purchase, starting at $7.99 per year. KeyScroll asks for nothing beyond the download.

## The numbers

| Metric | KeyScroll | KeyJ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/keyscroll/id6448870192/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 months |
| Monetization | Free | — |
| Size | 1 MB | 37 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Eldar Sadykov](https://appshunter.io/developer/1686735382) | [JoyPunk LLC](https://appshunter.io/developer/1876014751) |

## What reviewers say

### KeyScroll

[App page](https://appshunter.io/ios/app/keyscroll/id6448870192)

This app helps musicians intuitively explore and memorize musical modes. Users can adjust notes to visualize key signatures, with clear indicators for major and minor tonics. It also displays modes and their corresponding triads.

**Highlights:** Visualize key signatures, Major and minor tonic indicators, List of modes, Triads with tonal differences, Intuitive note adjustment

**In-app purchases:** none


### KeyJ

[App page](https://appshunter.io/ios/app/keyj-music-theory/id6758961144)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KeyJ: Music Collaboration & Theory | $7.99 | per year |


## Frequently asked questions

### Is KeyScroll free?

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

### Is KeyJ free?

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

### Do KeyScroll or KeyJ have ads?

Neither KeyScroll nor KeyJ shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*