# iImprov vs ScalePlay

The clearest difference is update cadence: ScalePlay at every 3 months against iImprov's every 32 months. iImprov's advantage is review sentiment (100% vs 71%) and price ($3.99 vs $9.99). On rating, ratings volume, ads and in-app purchases there is nothing between them.

iImprov costs $3.99 and ScalePlay $9.99 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 iImprov against 4.9 for ScalePlay. Both are backed by a comparable volume of ratings — 7 and 10 respectively. Written reviews are what separate them: 100% of iImprov's written reviews are positive against 71% of ScalePlay's.

iImprov ships an update every 32 months, ScalePlay every 3 months. The most recent releases landed on October 29, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | iImprov | ScalePlay |
| --- | --- | --- |
| Price | **$3.99** | $9.99 |
| Rating | [4.9 (7 ratings)](https://appshunter.io/ios/app/iimprov-bebop/id572415820/reviews) | **[4.9 (10 ratings)](https://appshunter.io/ios/app/scaleplay/id1140530163/reviews)** |
| Number of ratings | 7 | **10** |
| Positive reviews | **100.0% of reviews** | 71.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 32 months | **Every 3 months** |
| Monetization | Paid | Paid |
| Size | 19 MB | 14 MB |
| Requires iOS | **8.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jazz Apps Mobile LLC](https://appshunter.io/developer/421582808) | [RoGame Software](https://appshunter.io/developer/285831223) |

## What reviewers say

### iImprov

[App page](https://appshunter.io/ios/app/iimprov-bebop/id572415820)

Explore the language of Bebop with comprehensive lessons and interactive jam-alongs. Learn to master bebop scales, develop longer phrases, and practice chord substitutions with tempo-adjustable audio examples and transposable notation.

**Highlights:** Bebop scale realization, Phrase development techniques, Turnarounds and chord substitutions, Confirmation sequence breakdown, I Got Rhythm changes practice, Tempo-adjustable jam-alongs, Transposable notation

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is iImprov free?

iImprov costs $3.99, with no in-app purchases.

### Is ScalePlay free?

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

### Which has better reviews, iImprov or ScalePlay?

ScalePlay is rated higher. iImprov averages 4.9 out of 5 from 7 ratings, while ScalePlay averages 4.9 from 10 ratings.

### Do iImprov or ScalePlay have ads?

Neither iImprov nor ScalePlay shows ads.

### Which is updated more often, iImprov or ScalePlay?

iImprov ships an update every 32 months, and ScalePlay every 3 months. Most recently, iImprov was updated on October 29, 2026 and ScalePlay on October 10, 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.*