# JAZZed HD vs Set Theory Calculator

The clearest difference is price: JAZZed HD at Free against Set Theory Calculator's $3.99. JAZZed HD also leads on device support (3 vs 1) and iOS requirement (11.0 vs 26.0). Set Theory Calculator's advantage is rating (5.0 vs 4.3) and update cadence (every 3 weeks vs every 65 months). On ratings volume, ads and in-app purchases there is nothing between them.

JAZZed HD is free to download; Set Theory Calculator costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Set Theory Calculator holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 6 and 4 respectively.

JAZZed HD ships an update every 65 months, Set Theory Calculator every 3 weeks. Both last shipped on November 1, 2026.

## The numbers

| Metric | JAZZed HD | Set Theory Calculator |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | [4.3 (6 ratings)](https://appshunter.io/ios/app/jazzed-hd/id665985682/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/set-theory-calculator/id791334943/reviews)** |
| Number of ratings | **6** | 4 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 65 months | **Every 3 weeks** |
| Monetization | **Free** | Paid |
| Size | 76 MB | 8 MB |
| Requires iOS | **11.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [artistpro, LLC](https://appshunter.io/developer/1578409515) | [L Tomlin](https://appshunter.io/developer/791334946) |

## What reviewers say

### JAZZed HD

[App page](https://appshunter.io/ios/app/jazzed-hd/id665985682)

This publication offers practical insights for jazz educators, covering teaching methods, performance techniques, improvisation, and repertoire. It features profiles of successful jazz musicians and educators, providing valuable resources for high school and college instructors.

**Highlights:** In-depth editorial profiles, Teaching and performance methods, Improvisation techniques, Repertoire guidance, Recording techniques, Festival opportunities

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

**In-app purchases:** none


### Set Theory Calculator

[App page](https://appshunter.io/ios/app/set-theory-calculator/id791334943)

This app analyzes musical pitch class sets using post-tonal theory. It calculates normal and prime forms, displays Forte numbers, and generates interval class vectors. Users can also transpose, invert, complement, and play sets as melodies or chords, with an included overview of set theory.

**Highlights:** Calculate Normal Form and Prime Form, Display Forte Number, Calculate interval class vector, Transpose and invert sets, Display set matrix, Sort, invert, or complement sets, Play sets as melody or chord

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

**In-app purchases:** none


## Frequently asked questions

### Is JAZZed HD free?

JAZZed HD is free to download, with no in-app purchases.

### Is Set Theory Calculator free?

Set Theory Calculator costs $3.99, with no in-app purchases.

### Which has better reviews, JAZZed HD or Set Theory Calculator?

Set Theory Calculator is rated higher. JAZZed HD averages 4.3 out of 5 from 6 ratings, while Set Theory Calculator averages 5.0 from 4 ratings.

### Do JAZZed HD or Set Theory Calculator have ads?

Neither JAZZed HD nor Set Theory Calculator shows ads.

### Which is updated more often, JAZZed HD or Set Theory Calculator?

JAZZed HD ships an update every 65 months, and Set Theory Calculator every 3 weeks. Most recently, JAZZed HD was updated on November 1, 2026 and Set Theory Calculator on November 1, 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.*