# Marble vs Zdravo

The clearest difference is iOS requirement: Zdravo at 16.0 against Marble's 26.0. 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.

## The numbers

| Metric | Marble | Zdravo |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 days | — |
| Monetization | Free | — |
| Size | 849 MB | 1 MB |
| Requires iOS | 26.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Generative Spark Inc](https://appshunter.io/developer/1866853008) | [DINK Productions LLC](https://appshunter.io/developer/1844373585) |

## What reviewers say

### Marble

[App page](https://appshunter.io/ios/app/marble-stay-curious/id6773408198)

An interactive world designed to spark children's curiosity into learning through exploration, quests, and problem-solving. It adapts to their interests and learning levels, offering engaging challenges and real-world activity ideas.

**Highlights:** Interactive learning worlds, Adaptive quests and challenges, Parental progress reports, Real-world activity suggestions, COPPA compliant, Designed for ages 6-12

**Features:** macOS Compatibility

**In-app purchases:** none


### Zdravo

[App page](https://appshunter.io/ios/app/zdravo-basic-montenegrin/id6801658129)

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

**In-app purchases:** none


## Frequently asked questions

### Is Marble free?

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

### Is Zdravo free?

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

### Do Marble or Zdravo have ads?

Neither Marble nor Zdravo shows ads.

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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.*