# JAX Squasher vs Realbook Master

The clearest difference is rating: JAX Squasher at 4.0 against Realbook Master's 1.0. JAX Squasher also leads on price ($5.99 vs $9.99) and review sentiment (100% vs 88%). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

JAX Squasher costs $5.99 and Realbook Master $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

JAX Squasher holds the better App Store score, 4.0 against 1.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews point the same way: 100% of JAX Squasher's written reviews are positive against 88% of Realbook Master's.

## The numbers

| Metric | JAX Squasher | Realbook Master |
| --- | --- | --- |
| Price | **$5.99** | $9.99 |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/jax-squasher/id6504287575/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/realbook-master/id6754005659/reviews) |
| Number of ratings | **4** | 2 |
| Positive reviews | **100.0% of reviews** | 87.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Weekly |
| Monetization | Paid | Paid |
| Size | 19 MB | 34 MB |
| Requires iOS | **14.0** | 17.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Jens Guell](https://appshunter.io/developer/1195004865) | [Sanghyun Park](https://appshunter.io/developer/1846257439) |

## What reviewers say

### JAX Squasher

[App page](https://appshunter.io/ios/app/jax-squasher/id6504287575)

This audio processing tool maximizes loudness and compresses audio with simple controls. It offers transparent limiting and can be used across various Apple devices and compatible music production software.

**Highlights:** Self-adjusting loudness maximization, Simple input gain and threshold adjustment, Transparent limiting and loudness compression, MIDI automation for parameters, Universal app for Apple Silicon devices, Scalable to any screen size, Inbuilt preset management

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is JAX Squasher free?

JAX Squasher costs $5.99, with no in-app purchases.

### Is Realbook Master free?

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

### Which has better reviews, JAX Squasher or Realbook Master?

JAX Squasher is rated higher. JAX Squasher averages 4.0 out of 5 from 4 ratings, while Realbook Master averages 1.0 from 2 ratings.

### Do JAX Squasher or Realbook Master have ads?

Neither JAX Squasher nor Realbook Master shows ads.

---

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