# Holon vs Scaler EQ

The clearest difference is price: Holon at Free against Scaler EQ's $12.99. Holon also leads on review sentiment (75% vs 50%) and iOS requirement (12.0 vs 15.0). Scaler EQ's advantage is in-app purchases (none vs 2). On rating, ratings volume, update cadence and ads there is nothing between them.

Holon is free to download; Scaler EQ costs $12.99 up front. Holon sells 2 one-off in-app purchases. Scaler EQ asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.5 for Holon against 4.6 for Scaler EQ. Both are backed by a comparable volume of ratings — 14 and 27 respectively. Written reviews are what separate them: 75% of Holon's written reviews are positive against 50% of Scaler EQ's.

Holon ships an update every 3 months, Scaler EQ every 2 months. Both last shipped on October 3, 2026.

## The numbers

| Metric | Holon | Scaler EQ |
| --- | --- | --- |
| Price | **Free** | $12.99 |
| Rating | [4.5 (14 ratings)](https://appshunter.io/ios/app/holon/id1352687747/reviews) | **[4.6 (27 ratings)](https://appshunter.io/ios/app/scaler-eq/id6499342445/reviews)** |
| Number of ratings | 14 | **27** |
| Positive reviews | **75.0% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Paid | Paid |
| Size | 144 MB | 27 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Holonic Systems Oy](https://appshunter.io/developer/1172474856) | [Scaler Music](https://appshunter.io/developer/1603180477) |

## What reviewers say

### Holon

[App page](https://appshunter.io/ios/app/holon/id1352687747)

This app transforms your movement through cities into a dynamic, real-time musical score. It uses your physical location and activity to generate interactive synth music, encouraging outdoor exploration and turning listeners into performers.

**Highlights:** Human-powered music generation, Encourages outdoor activity, Zero UI for minimal distraction, Environmentally responsive music, Real-time synth music creation, Optional AirPods and Apple Watch integration

**Features:** Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Apple Watch support | Free | one-time |
| Movesense Support | Free | one-time |


### Scaler EQ

[App page](https://appshunter.io/ios/app/scaler-eq/id6499342445)

This application offers a unique approach to audio equalization by intelligently adjusting frequencies based on the detected key and scale of your music. It provides both musical enhancements and traditional EQ controls for detailed sound shaping.

**Highlights:** In-key EQ with harmonic band types, Automatic key and scale detection, Familiar EQ controls with added color, Magic Shelf for enhanced low and high frequencies, Mastering-grade limiters and meters, Dynamic band control and sidechain input, Standalone and AUv3 host compatibility

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Holon free?

Holon is free to download, with in-app purchases available.

### Is Scaler EQ free?

Scaler EQ costs $12.99, with no in-app purchases.

### Which has better reviews, Holon or Scaler EQ?

Scaler EQ is rated higher. Holon averages 4.5 out of 5 from 14 ratings, while Scaler EQ averages 4.6 from 27 ratings.

### Do Holon or Scaler EQ have ads?

Neither Holon nor Scaler EQ shows ads.

### Which is updated more often, Holon or Scaler EQ?

Holon ships an update every 3 months, and Scaler EQ every 2 months. Most recently, Holon was updated on October 3, 2026 and Scaler EQ on October 3, 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.*