# Holon vs SuperGrid

The clearest difference is in-app purchases: SuperGrid at none against Holon's 2. SuperGrid also leads on update cadence (every 9 days vs every 3 months). Holon's advantage is device support (4 vs 1) and iOS requirement (12.0 vs 18.6). On price and ads there is nothing between them.

Both are free to download. Holon sells 2 one-off in-app purchases. SuperGrid asks for nothing beyond the download.

Holon ships an update every 3 months, SuperGrid every 9 days. The most recent releases landed on September 15, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Holon | SuperGrid |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (14 ratings)](https://appshunter.io/ios/app/holon/id1352687747/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 9 days** |
| Monetization | Paid | — |
| Size | 144 MB | 8 MB |
| Requires iOS | **12.0** | 18.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Holonic Systems Oy](https://appshunter.io/developer/1172474856) | [Jonathan Raymond](https://appshunter.io/developer/1785715855) |

## 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 |


### SuperGrid

[App page](https://appshunter.io/ios/app/supergrid/id6790907967)

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

**In-app purchases:** none


## Frequently asked questions

### Is Holon free?

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

### Is SuperGrid free?

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

### Do Holon or SuperGrid have ads?

Neither Holon nor SuperGrid shows ads.

### Which is updated more often, Holon or SuperGrid?

Holon ships an update every 3 months, and SuperGrid every 9 days. Most recently, Holon was updated on September 15, 2026 and SuperGrid on September 29, 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.*