# Kidz Learn Rocks vs CloudLabs Circulatory system

The clearest difference is price: CloudLabs Circulatory system at Free against Kidz Learn Rocks's $2.99. CloudLabs Circulatory system also leads on iOS requirement (9.0 vs 13.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

CloudLabs Circulatory system is free to download; Kidz Learn Rocks costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Kidz Learn Rocks ships an update every 29 months, CloudLabs Circulatory system every 21 months. The most recent releases landed on October 8, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Kidz Learn Rocks | CloudLabs Circulatory system |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 29 months | **Every 21 months** |
| Size | 15 MB | 116 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Gomathy Shankaran](https://appshunter.io/developer/503956143) | [Jiovany Orozco](https://appshunter.io/developer/1114670847) |

## What reviewers say

### Kidz Learn Rocks

[App page](https://appshunter.io/ios/app/kidz-learn-rocks/id1467550863)

**In-app purchases:** none


### CloudLabs Circulatory system

[App page](https://appshunter.io/ios/app/cloudlabs-circulatory-system/id1635767989)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Kidz Learn Rocks free?

Kidz Learn Rocks costs $2.99, with no in-app purchases.

### Is CloudLabs Circulatory system free?

CloudLabs Circulatory system is free to download, with no in-app purchases.

### Do Kidz Learn Rocks or CloudLabs Circulatory system have ads?

Neither Kidz Learn Rocks nor CloudLabs Circulatory system shows ads.

### Which is updated more often, Kidz Learn Rocks or CloudLabs Circulatory system?

Kidz Learn Rocks ships an update every 29 months, and CloudLabs Circulatory system every 21 months. Most recently, Kidz Learn Rocks was updated on October 8, 2026 and CloudLabs Circulatory system on October 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.*