# ScaleGen vs Quantum Sequencer

The clearest difference is update cadence: Quantum Sequencer at every 6 weeks against ScaleGen's every 29 months. Quantum Sequencer also leads on device support (3 vs 1). ScaleGen's advantage is price ($3.99 vs $7.99) and iOS requirement (10.0 vs 12.0). On rating, review sentiment, ratings volume and ads there is nothing between them.

ScaleGen costs $3.99 and Quantum Sequencer $7.99 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 — 4.7 for ScaleGen against 4.6 for Quantum Sequencer. Both are backed by a comparable volume of ratings — 12 and 35 respectively. Written reviews are what separate them: 71% of ScaleGen's written reviews are positive against 69% of Quantum Sequencer's.

ScaleGen ships an update every 29 months, Quantum Sequencer every 6 weeks. The most recent releases landed on June 1, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | ScaleGen | Quantum Sequencer |
| --- | --- | --- |
| Price | **$3.99** | $7.99 |
| Rating | **[4.7 (12 ratings)](https://appshunter.io/ios/app/scalegen/id908056629/reviews)** | [4.6 (35 ratings)](https://appshunter.io/ios/app/quantum-sequencer/id1207932898/reviews) |
| Number of ratings | 12 | **35** |
| Positive reviews | **70.6% of reviews** | 68.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 29 months | **Every 6 weeks** |
| Monetization | Paid | Paid |
| Size | 14 MB | 191 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Gestrument AB](https://appshunter.io/developer/576235485) | [anthony saunders](https://appshunter.io/developer/460303742) |

## 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


### Quantum Sequencer

[App page](https://appshunter.io/ios/app/quantum-sequencer/id1207932898)

This app offers an interactive approach to music composition, focusing on detailed steps that can be arranged into looping sequences. It provides extensive control over note parameters and allows for real-time manipulation and experimentation.

**Highlights:** Interactive step-focused composition, Detailed step notation (probability, ornamentation), Configurable sequence lengths and sub-sequences, 16 general faders for parameter editing, MIDI learnable faders, Programmable loop actions, Per-sequence MIDI FX, devices, and controllers

**In-app purchases:** none


## Frequently asked questions

### Is ScaleGen free?

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

### Is Quantum Sequencer free?

Quantum Sequencer costs $7.99, with no in-app purchases.

### Which has better reviews, ScaleGen or Quantum Sequencer?

ScaleGen is rated higher. ScaleGen averages 4.7 out of 5 from 12 ratings, while Quantum Sequencer averages 4.6 from 35 ratings.

### Do ScaleGen or Quantum Sequencer have ads?

Neither ScaleGen nor Quantum Sequencer shows ads.

### Which is updated more often, ScaleGen or Quantum Sequencer?

ScaleGen ships an update every 29 months, and Quantum Sequencer every 6 weeks. Most recently, ScaleGen was updated on June 1, 2026 and Quantum Sequencer on September 19, 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.*