# ScaleGen vs Midi Echo AU

The clearest difference is rating: ScaleGen at 4.7 against Midi Echo AU's 3.5. ScaleGen also leads on review sentiment (71% vs 50%). Midi Echo AU's advantage is update cadence (every 6 weeks vs every 29 months) and price ($1.99 vs $3.99). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

ScaleGen costs $3.99 and Midi Echo AU $1.99 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 3.5. Both are backed by a comparable volume of ratings — 12 and 8 respectively. Written reviews point the same way: 71% of ScaleGen's written reviews are positive against 50% of Midi Echo AU's.

ScaleGen ships an update every 29 months, Midi Echo AU every 6 weeks. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | ScaleGen | Midi Echo AU |
| --- | --- | --- |
| Price | $3.99 | **$1.99** |
| Rating | **[4.7 (12 ratings)](https://appshunter.io/ios/app/scalegen/id908056629/reviews)** | [3.5 (8 ratings)](https://appshunter.io/ios/app/midi-echo-au/id1422324067/reviews) |
| Number of ratings | **12** | 8 |
| Positive reviews | **70.6% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 29 months | **Every 6 weeks** |
| Monetization | Paid | Paid |
| Size | 14 MB | 13 MB |
| Requires iOS | **10.0** | 11.0 |
| 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


### Midi Echo AU

[App page](https://appshunter.io/ios/app/midi-echo-au/id1422324067)

This app creates repeating MIDI note effects, similar to audio echoes but for digital music signals. It allows for independent control of note-on and note-off messages, offering extensive customization for musical expression.

**Highlights:** Selectable echo types (fixed, ping pong, taper), Adjustable number of echoes (0-20), MIDI velocity reduction for quieter echoes, Define pitch interval for successive echoes, Tempo sync or mSec delay time, Set MIDI channel for echoes, Disable individual echoes, MIDI thru control

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ScaleGen free?

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

### Is Midi Echo AU free?

Midi Echo AU costs $1.99, with no in-app purchases.

### Which has better reviews, ScaleGen or Midi Echo AU?

ScaleGen is rated higher. ScaleGen averages 4.7 out of 5 from 12 ratings, while Midi Echo AU averages 3.5 from 8 ratings.

### Do ScaleGen or Midi Echo AU have ads?

Neither ScaleGen nor Midi Echo AU shows ads.

### Which is updated more often, ScaleGen or Midi Echo AU?

ScaleGen ships an update every 29 months, and Midi Echo AU every 6 weeks. Most recently, ScaleGen was updated on October 26, 2026 and Midi Echo AU on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*