# ScaleGen vs Cality

The clearest difference is update cadence: Cality at every 4 weeks against ScaleGen's every 29 months. Cality also leads on device support (3 vs 1). ScaleGen's advantage is rating (4.7 vs 4.4) and price ($3.99 vs $6.99). On review sentiment, ratings volume, ads and in-app purchases there is nothing between them.

ScaleGen costs $3.99 and Cality $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ScaleGen holds the better App Store score, 4.7 against 4.4. Both are backed by a comparable volume of ratings — 12 and 17 respectively. Written reviews point the same way: 71% of ScaleGen's written reviews are positive against 67% of Cality's.

ScaleGen ships an update every 29 months, Cality every 4 weeks. Both last shipped on October 26, 2026.

## The numbers

| Metric | ScaleGen | Cality |
| --- | --- | --- |
| Price | **$3.99** | $6.99 |
| Rating | **[4.7 (12 ratings)](https://appshunter.io/ios/app/scalegen/id908056629/reviews)** | [4.4 (17 ratings)](https://appshunter.io/ios/app/cality/id1448694455/reviews) |
| Number of ratings | 12 | **17** |
| Positive reviews | **70.6% of reviews** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 29 months | **Every 4 weeks** |
| Monetization | Paid | Paid |
| Size | 14 MB | 1 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Gestrument AB](https://appshunter.io/developer/576235485) | [Pagefall limited](https://appshunter.io/developer/1440149544) |

## What reviewers say

### ScaleGen

[App page](https://appshunter.io/ios/app/scalegen/id908056629)

Generate and edit musical scales with intricate detail. Explore traditional and experimental tunings, audition your creations, and export them as MIDI files or to other applications. Ideal for composers and students seeking to expand their musical horizons.

**Highlights:** Generate and manipulate musical scales, Detailed scale definition and editing, Audition scales within the app, Export as MIDI or to Gestrument, Predefined scales from various traditions, Explore microtonal and experimental tunings

**In-app purchases:** none


### Cality

[App page](https://appshunter.io/ios/app/cality/id1448694455)

This app is a creative MIDI processor that allows for rhythmic enhancement, controlled chaos, and the addition of new textures. It offers features like pitch quantization, probability gates, and a cloud module for generating additional notes.

**Highlights:** Rhythmic enhancement, Controlled chaos, Pitch quantization, Probability gate, Cloud module for additional notes, Midi controllable note quantizer, Swing and accents

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

**In-app purchases:** none


## Frequently asked questions

### Is ScaleGen free?

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

### Is Cality free?

Cality costs $6.99, with no in-app purchases.

### Which has better reviews, ScaleGen or Cality?

ScaleGen is rated higher. ScaleGen averages 4.7 out of 5 from 12 ratings, while Cality averages 4.4 from 17 ratings.

### Do ScaleGen or Cality have ads?

Neither ScaleGen nor Cality shows ads.

### Which is updated more often, ScaleGen or Cality?

ScaleGen ships an update every 29 months, and Cality every 4 weeks. Most recently, ScaleGen was updated on October 26, 2026 and Cality on October 26, 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.*