# iImprov vs ScalePlay

The clearest difference is rating: ScalePlay at 4.9 against iImprov's 3.0. ScalePlay also leads on update cadence (every 3 months vs every 28 months) and ratings volume (10 vs 2). iImprov's advantage is price ($3.99 vs $9.99) and device support (3 vs 1). On review sentiment, ads, in-app purchases and monetization model 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.

ScalePlay holds the better App Store score, 4.9 against 3.0. That said, the two scores are not equally well evidenced: ScalePlay has 10 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 68% of iImprov's written reviews are positive against 71% of ScalePlay's.

iImprov ships an update every 28 months, ScalePlay every 3 months. The most recent releases landed on October 7, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | iImprov | ScalePlay |
| --- | --- | --- |
| Price | **$3.99** | $9.99 |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/iimprov-modal/id434112459/reviews) | **[4.9 (10 ratings)](https://appshunter.io/ios/app/scaleplay/id1140530163/reviews)** |
| Number of ratings | 2 | **10** |
| Positive reviews | 68.4% of reviews | **71.4% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 3 months** |
| Monetization | Paid | Paid |
| Size | 8 MB | 14 MB |
| Requires iOS | **15.6** | 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-modal/id434112459)

This app helps jazz musicians of all levels master modal improvisation. It offers detailed explanations of theory, scale relationships, and practical exercises with audio and JAM-A-longs in various keys and styles. Tailored for modal tunes, it covers minor modal, 7 sus 4, and Major 7#4 progressions.

**Highlights:** Modal improvisation theory, Scale and chord relation explanations, Pentatonic scale usage, Audio and visual scale examples, Interactive JAM-A-longs, Adjustable tempo and instrument balance, Transposition selection

**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 3.0 out of 5 from 2 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 28 months, and ScalePlay every 3 months. Most recently, iImprov was updated on October 7, 2026 and ScalePlay on September 24, 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.*