# Hydropolis vs MultiAPP

The clearest difference is update cadence: MultiAPP at every 9 days against Hydropolis's every 10 months. Hydropolis's advantage is 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, MultiAPP every 9 days. The most recent releases landed on October 4, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Hydropolis | MultiAPP |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 16.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 9 days** |
| Monetization | Free | — |
| Size | 118 MB | 8 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [miejskie przedsiebiorstwo wodociagow i kanalizacji s.a](https://appshunter.io/developer/1444870860) | [Sergiusz Rozanski](https://appshunter.io/developer/1678814757) |

## 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


### MultiAPP

[App page](https://appshunter.io/ios/app/multiapp/id6450547289)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Hydropolis free?

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

### Is MultiAPP free?

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

### Do Hydropolis or MultiAPP have ads?

Neither Hydropolis nor MultiAPP shows ads.

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

Hydropolis ships an update every 10 months, and MultiAPP every 9 days. Most recently, Hydropolis was updated on October 4, 2026 and MultiAPP 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.*