# ScalePlay vs JAX CHROMATIC

ScalePlay and JAX CHROMATIC both sit at 4.9 stars, but that hides the real split: 100% of JAX CHROMATIC's written reviews are positive against 71% of ScalePlay's. JAX CHROMATIC also leads on device support (4 vs 1) and iOS requirement (14.0 vs 26.0). ScalePlay's advantage is update cadence (every 3 months vs every 14 months) and price ($9.99 vs $12.99). On rating, ratings volume, ads and in-app purchases there is nothing between them.

ScalePlay costs $9.99 and JAX CHROMATIC $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.9 for ScalePlay against 4.9 for JAX CHROMATIC. Both are backed by a comparable volume of ratings — 10 and 7 respectively. Written reviews are what separate them: 71% of ScalePlay's written reviews are positive against 100% of JAX CHROMATIC's.

ScalePlay ships an update every 3 months, JAX CHROMATIC every 14 months. The most recent releases landed on October 10, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | ScalePlay | JAX CHROMATIC |
| --- | --- | --- |
| Price | **$9.99** | $12.99 |
| Rating | [4.9 (10 ratings)](https://appshunter.io/ios/app/scaleplay/id1140530163/reviews) | [4.9 (7 ratings)](https://appshunter.io/ios/app/jax-chromatic-compander/id1619225672/reviews) |
| Number of ratings | **10** | 7 |
| Positive reviews | 71.4% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 14 months |
| Monetization | Paid | Paid |
| Size | 14 MB | 23 MB |
| Requires iOS | 26.0 | **14.0** |
| Devices | iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [RoGame Software](https://appshunter.io/developer/285831223) | [Jens Guell](https://appshunter.io/developer/1195004865) |

## What reviewers say

### ScalePlay

[App page](https://appshunter.io/ios/app/scaleplay/id1140530163)

This app generates intricate musical patterns and sequences using complex scale theory. It's a powerful tool for both music production and education, offering scale references, virtual instruments, and interactive playback features.

**Highlights:** Generates intricate ostinatos and sequences, Applies complex scale patterns, User-defined songforms and chord changes, Scale references for hundreds of scales, Nine virtual instruments and 128 sounds, Visualizes scale relations, Interactive playback with generated patterns

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

**In-app purchases:** none


### JAX CHROMATIC

[App page](https://appshunter.io/ios/app/jax-chromatic-compander/id1619225672)

This advanced audio processor splits sound into 32 frequency bands for real-time spectral dynamics modification. It enhances sound perception, removes muddiness, and offers a user-friendly interface for creative mixing and mastering.

**Highlights:** 32-band spectral processing, Real-time compander per band, Analog filter models, Latency-free operation, Mastering and mixing tool, User-friendly interface

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ScalePlay free?

ScalePlay costs $9.99, with no in-app purchases.

### Is JAX CHROMATIC free?

JAX CHROMATIC costs $12.99, with no in-app purchases.

### Which has better reviews, ScalePlay or JAX CHROMATIC?

ScalePlay and JAX CHROMATIC are both rated 4.9 out of 5 on the App Store, from 10 and 7 ratings respectively.

### Do ScalePlay or JAX CHROMATIC have ads?

Neither ScalePlay nor JAX CHROMATIC shows ads.

### Which is updated more often, ScalePlay or JAX CHROMATIC?

ScalePlay ships an update every 3 months, and JAX CHROMATIC every 14 months. Most recently, ScalePlay was updated on October 10, 2026 and JAX CHROMATIC on September 23, 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.*