# NumbersRushRush vs Marble

The clearest difference is iOS requirement: NumbersRushRush at 16.6 against Marble's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

NumbersRushRush ships an update every 2 days, Marble every 3 days. Both last shipped on October 28, 2026.

## The numbers

| Metric | NumbersRushRush | Marble |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.1 (8 ratings)](https://appshunter.io/ios/app/marble-stay-curious/id6773408198/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 days |
| Monetization | — | Free |
| Size | 42 MB | 797 MB |
| Requires iOS | **16.6** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Xxx Gonggarenqing](https://appshunter.io/developer/1849150598) | [Generative Spark Inc](https://appshunter.io/developer/1866853008) |

## What reviewers say

### NumbersRushRush

[App page](https://appshunter.io/ios/app/numbersrushrush-fast-brain/id6754656222)

**In-app purchases:** none


### 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


## Frequently asked questions

### Is NumbersRushRush free?

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

### Is Marble free?

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

### Do NumbersRushRush or Marble have ads?

Neither NumbersRushRush nor Marble shows ads.

### Which is updated more often, NumbersRushRush or Marble?

NumbersRushRush ships an update every 2 days, and Marble every 3 days. Most recently, NumbersRushRush was updated on October 28, 2026 and Marble on October 28, 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.*