# Eau Agglo vs Rusty.

The clearest difference is in-app purchases: Eau Agglo at none against Rusty.'s 1. Eau Agglo also leads on device support (3 vs 1) and iOS requirement (15.1 vs 26.0). Rusty.'s advantage is update cadence (every 6 weeks vs every 3 months). On price and ads there is nothing between them.

Both are free to download. Rusty. sells 1 one-off in-app purchase. Eau Agglo asks for nothing beyond the download.

Eau Agglo ships an update every 3 months, Rusty. every 6 weeks. The most recent releases landed on October 1, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Eau Agglo | Rusty. |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Size | 36 MB | 1 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [La Catalane des Eaux - Eau Agglo](https://appshunter.io/developer/1729427050) | [Dario Gartmann](https://appshunter.io/developer/1865263482) |

## What reviewers say

### Eau Agglo

[App page](https://appshunter.io/ios/app/eau-agglo/id6477484945)

**In-app purchases:** none


### Rusty.

[App page](https://appshunter.io/ios/app/rusty/id6762121969)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rusty. Premium | $2.99 | one-time |


## Frequently asked questions

### Is Eau Agglo free?

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

### Is Rusty. free?

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

### Do Eau Agglo or Rusty. have ads?

Neither Eau Agglo nor Rusty. shows ads.

### Which is updated more often, Eau Agglo or Rusty.?

Eau Agglo ships an update every 3 months, and Rusty. every 6 weeks. Most recently, Eau Agglo was updated on October 1, 2026 and Rusty. on October 7, 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.*