---
title: "Realbook Master - Reviews, Revenue and Downloads in South Korea | Apple App Store"
description: "The sheet music app that understands real live musicians. Swipe up or down to change keys on the fly - because the show MUST GO ON!  Built for any musicians who perform live.  Whether you're on stage,"
---

# Realbook Master — South Korea

![Realbook Master App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/9f/53/d8/9f53d87d-b340-159f-80e7-645341e52586/AppIcon-0-0-1x_U007epad-0-1-0-85-220.png/434x0w.png)

**Developer:** [Sanghyun Park](https://apptail.io/developer/sanghyun-park-LPTgob)
**Category:** Music
**Rating:** 5.0/5 (11 ratings)
**Price:** 17,000.00 ￦
**Bundle ID:** musicatstudio.MusicXMLViewerApp
**Store:** Apple App Store
**Country:** South Korea
**Version:** 1.2.1 (released 2026-08-26)
**Original Release:** 2025-12-02
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/kr/app/app/id6754005659)
**AppTail Page:** [https://apptail.io/app/realbook-master-nLay/south-korea](https://apptail.io/app/realbook-master-nLay/south-korea)

## Realbook Master Description
The sheet music app that understands real live musicians.
Swipe up or down to change keys on the fly - because the show MUST GO ON!

Built for any musicians who perform live. 
Whether you're on stage, in rehearsal, or playing at church, Realbook Master gives you the instant freedom.



Features :
1) Transpose chords and melodies to all 12 keys by swiping the sheet music or using +/- buttons in the top toolbar
2) Download sheet music from the forum
3) Lyrics On/Off
4) Select transposing instruments (bass clef support)
5) Create and share setlists
6) Export transposed sheet music as PDF
7) MusicXML file support
8) Supports various themes, music fonts, and background modes

Perfect for: 
- Jazz musicians who need quick key changes 
- Wind players tired of transposing manually 
- Church musicians managing large song libraries 
- Bassists who need proper clef and range 
- Any performer who values speed and flexibility on stage

## Realbook Master Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/4a/25/19/4a2519c9-ec9d-6748-3520-c4f7e3a432a8/01.png/1290x2796.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/39/4b/e1/394be197-64c9-5231-e269-93374166ebbc/03.png/1290x2796.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/8d/e2/0e/8de20eb5-64c2-d745-9ab0-b5a8d2bb5619/02.png/1290x2796.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/ac/e4/4b/ace44b94-1b4c-e040-2767-c01b9ccf74dd/04.png/1290x2796.png)

## Realbook Master Rating Breakdown in South Korea
- 5 stars: 11 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 0 (0%)

## Realbook Master Reviews in South Korea

### ***** "Best jazz real book app"
This is great jazz realbook app for musicians, specially for vocal. Who wants to change the key and sharing with your band members. You saving a lot of time to writing a transpose chart. Spend more time to work on yourself
-- Giitvvb, 2025-12-17

### ***** "Best of the best of the best"
Amzing! So user friendly.
-- 디어다녤59, 2025-12-11

### ***** "The best"
Best app for jazz musicians.
-- Forkeith, 2025-12-11

[View all Realbook Master reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)


## Realbook Master Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Paid | Germany | Music | #176 |
| Top Paid | South Korea | Music | #221 |

## Realbook Master Discovered Keywords
- realbook master


## Realbook Master Available In
- [South Korea](https://apptail.io/app/realbook-master-nLay/south-korea)
- [United States](https://apptail.io/app/realbook-master-nLay/united-states)
- [United Kingdom](https://apptail.io/app/realbook-master-nLay/united-kingdom)
- [New Zealand](https://apptail.io/app/realbook-master-nLay/new-zealand)
- [Romania](https://apptail.io/app/realbook-master-nLay/romania)
- [Russia](https://apptail.io/app/realbook-master-nLay/russia)
- [Egypt](https://apptail.io/app/realbook-master-nLay/egypt)
- [Vietnam](https://apptail.io/app/realbook-master-nLay/vietnam)
- [Spain](https://apptail.io/app/realbook-master-nLay/spain)

---

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