# Xkey Plus vs Music Sheet®

The clearest difference is price: Xkey Plus at Free against Music Sheet®'s $19.99. Xkey Plus also leads on iOS requirement (9.3 vs 17.0). On in-app purchases there is nothing between them.

Xkey Plus is free to download; Music Sheet® costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Xkey Plus | Music Sheet® |
| --- | --- | --- |
| Price | **Free** | $19.99 |
| Rating | **[2.9 (13 ratings)](https://appshunter.io/ios/app/xkey-plus/id698087460/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 35.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 3 months | — |
| Monetization | Free | — |
| Size | 9 MB | 3 MB |
| Requires iOS | **9.3** | 17.0 |
| Devices | **iPad** | — |
| Age rating | 4+ | 4+ |
| Developer | [ESI Audiotechnik GmbH](https://appshunter.io/developer/1627424644) | [Ruizheng Liu](https://appshunter.io/developer/782255647) |

## What reviewers say

### Xkey Plus

[App page](https://appshunter.io/ios/app/xkey-plus/id698087460)

This app enhances the functionality of ESI Xkey musical keyboards on mobile devices. It allows users to update firmware, customize velocity curves, and configure key sensitivity and timings for an advanced user experience.

**Highlights:** Check for new Xkey firmware, Velocity curves editor, Configure Xkey sensitivity & timings, Access all Xkey parameters, Configure key & button assignments, Access Xkey documentation & support

**Features:** macOS Compatibility

**In-app purchases:** none


### Music Sheet®

[App page](https://appshunter.io/ios/app/music-sheet/id6473850984)

**In-app purchases:** none


## Frequently asked questions

### Is Xkey Plus free?

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

### Is Music Sheet® free?

Music Sheet® costs $19.99, with no in-app purchases.

---

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