# Realbook Master vs ARC Score

The clearest difference is price: ARC Score at Free against Realbook Master's $9.99. ARC Score also leads on update cadence (every 2 days vs weekly). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

ARC Score is free to download; Realbook Master costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Realbook Master ships an update weekly, ARC Score every 2 days. The most recent releases landed on October 7, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Realbook Master | ARC Score |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/realbook-master/id6754005659/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 87.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | Paid | — |
| Size | 34 MB | 15 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sanghyun Park](https://appshunter.io/developer/1846257439) | [sang hoon lee](https://appshunter.io/developer/6797694140) |

## What reviewers say

### Realbook Master

[App page](https://appshunter.io/ios/app/realbook-master/id6754005659)

This music app allows live performers to instantly transpose sheet music to any key. It supports various instruments and includes features for managing setlists and customizing the display. Ideal for musicians needing quick key changes on stage or in rehearsal.

**Highlights:** Transpose chords and melodies to all 12 keys, Download sheet music from forum, Lyrics On/Off, Select transposing instruments (bass clef), Create and share setlists, Export transposed sheet music as PDF, MusicXML file support

**Features:** Vision Pro support

**In-app purchases:** none


### ARC Score

[App page](https://appshunter.io/ios/app/arc-score/id6797694138)

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

**In-app purchases:** none


## Frequently asked questions

### Is Realbook Master free?

Realbook Master costs $9.99, with no in-app purchases.

### Is ARC Score free?

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

### Do Realbook Master or ARC Score have ads?

Neither Realbook Master nor ARC Score shows ads.

### Which is updated more often, Realbook Master or ARC Score?

Realbook Master ships an update weekly, and ARC Score every 2 days. Most recently, Realbook Master was updated on October 7, 2026 and ARC Score on October 14, 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.*