# ScaleMate vs THE FEEL BOOK

The clearest difference is price: THE FEEL BOOK at Free against ScaleMate's $3.99. THE FEEL BOOK also leads on chart position (#180 vs unranked) and device support (4 vs 2). ScaleMate's advantage is in-app purchases (none vs 3) and review sentiment (100% vs 71%). On ratings volume, update cadence and ads there is nothing between them.

THE FEEL BOOK is free to download; ScaleMate costs $3.99 up front. THE FEEL BOOK sells 3 in-app purchases, starting at $6.99 per month. ScaleMate asks for nothing beyond the download.

ScaleMate holds the better App Store score, 4.8 against 4.4. Both are backed by a comparable volume of ratings — 24 and 55 respectively. Written reviews point the same way: 100% of ScaleMate's written reviews are positive against 71% of THE FEEL BOOK's.

ScaleMate ships an update fortnightly, THE FEEL BOOK every 2 weeks. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | ScaleMate | THE FEEL BOOK |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.8 (24 ratings)](https://appshunter.io/ios/app/scalemate-visualize-harmony/id1538285671/reviews)** | [4.4 (55 ratings)](https://appshunter.io/ios/app/the-feel-book/id6746460341/reviews) |
| Number of ratings | 24 | **55** |
| Positive reviews | **100.0% of reviews** | 71.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | — | **#180** |
| Size | 36 MB | 73 MB |
| Requires iOS | 17.5 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Anton Schwartz](https://appshunter.io/developer/1330331588) | [2XJ VENTURES LLC](https://appshunter.io/developer/1815547217) |

## What reviewers say

### ScaleMate

[App page](https://appshunter.io/ios/app/scalemate-visualize-harmony/id1538285671)

This app provides an interactive reference for understanding music scales and jazz harmony. It allows users to hear, visualize, and manipulate scales to deepen their comprehension of musical concepts. Features include expert write-ups, practical usage tips, and animated transformations between scales.

**Highlights:** Hear scales as melodies, Visualize scales on circle of fifths, Expert scale write-ups, Manipulate scales and hear changes, Full library of scales, Automatic scale recognition, Animated scale transformations

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

**In-app purchases:** none


### THE FEEL BOOK

[App page](https://appshunter.io/ios/app/the-feel-book/id6746460341)

**Currently charting:** #180 Top Grossing · Music (US App Store)

Practice jazz improvisation with recordings of world-class musicians. Hone your skills with a sophisticated rhythm section and access a growing library of transposable lead sheets. Experiment with advanced features like looping, transposition, and a 3-channel mixer to elevate your musical performance.

**Highlights:** Improvise with a professional rhythm section, Isolate and study bass lines, Sophisticated piano harmony, Transposable lead sheets, Advanced looping capabilities, Variable tempo control, 3-channel instrument mixer

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $6.99 | per month |
| Quarterly Subscription | $16.49 | per 3 months |
| Annual Subscription | $47.90 | per year |


## Frequently asked questions

### Is ScaleMate free?

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

### Is THE FEEL BOOK free?

THE FEEL BOOK is free to download, with in-app purchases available.

### Which has better reviews, ScaleMate or THE FEEL BOOK?

ScaleMate is rated higher. ScaleMate averages 4.8 out of 5 from 24 ratings, while THE FEEL BOOK averages 4.4 from 55 ratings.

### Do ScaleMate or THE FEEL BOOK have ads?

Neither ScaleMate nor THE FEEL BOOK shows ads.

### Which is updated more often, ScaleMate or THE FEEL BOOK?

ScaleMate ships an update fortnightly, and THE FEEL BOOK every 2 weeks. Most recently, ScaleMate was updated on October 24, 2026 and THE FEEL BOOK on October 30, 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.*