# Hydropolis vs ZORZA

The clearest difference is update cadence: ZORZA at weekly against Hydropolis's every 10 months. Hydropolis's advantage is iOS requirement (12.0 vs 16.4). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Hydropolis ships an update every 10 months, ZORZA weekly. The most recent releases landed on October 21, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Hydropolis | ZORZA |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 16.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Weekly** |
| Monetization | Free | — |
| Size | 118 MB | 84 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [miejskie przedsiebiorstwo wodociagow i kanalizacji s.a](https://appshunter.io/developer/1444870860) | [MIRANDA SP Z O O](https://appshunter.io/developer/1811567437) |

## What reviewers say

### Hydropolis

[App page](https://appshunter.io/ios/app/hydropolis/id1444870861)

Explore a water knowledge center through an audio guide. This app offers interactive exhibits and multimedia content to expand your understanding of water in an engaging and fun way.

**Highlights:** Audio guide functionality, Interactive installations, Multimedia content, Educational information, Engaging user experience

**Features:** macOS Compatibility

**In-app purchases:** none


### ZORZA

[App page](https://appshunter.io/ios/app/zorza/id6745260587)

**Features:** Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Hydropolis free?

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

### Is ZORZA free?

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

### Do Hydropolis or ZORZA have ads?

Neither Hydropolis nor ZORZA shows ads.

### Which is updated more often, Hydropolis or ZORZA?

Hydropolis ships an update every 10 months, and ZORZA weekly. Most recently, Hydropolis was updated on October 21, 2026 and ZORZA on September 14, 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.*