# Hydropolis vs CHUDOMIR

The clearest difference is update cadence: Hydropolis at every 10 months against CHUDOMIR's every 38 months. Hydropolis also leads on iOS requirement (12.0 vs 15.0). 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, CHUDOMIR every 38 months. The most recent releases landed on October 4, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Hydropolis | CHUDOMIR |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 16.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 months** | Every 38 months |
| Monetization | Free | — |
| Size | 118 MB | 225 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [miejskie przedsiebiorstwo wodociagow i kanalizacji s.a](https://appshunter.io/developer/1444870860) | [Desislava Pingelova](https://appshunter.io/developer/1700123848) |

## 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


### CHUDOMIR

[App page](https://appshunter.io/ios/app/chudomir/id6455685513)

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

**In-app purchases:** none


## Frequently asked questions

### Is Hydropolis free?

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

### Is CHUDOMIR free?

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

### Do Hydropolis or CHUDOMIR have ads?

Neither Hydropolis nor CHUDOMIR shows ads.

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

Hydropolis ships an update every 10 months, and CHUDOMIR every 38 months. Most recently, Hydropolis was updated on October 4, 2026 and CHUDOMIR on October 11, 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.*