# OKCoral vs Environmental change

The clearest difference is iOS requirement: Environmental change at 9.0 against OKCoral's 11.0. 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 | OKCoral | Environmental change |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (3 ratings)](https://appshunter.io/ios/app/okcoral/id1350898621/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Monetization | Free | — |
| Size | 110 MB | 43 MB |
| Requires iOS | 11.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [OKCoral](https://appshunter.io/developer/1350898620) | [DANMAR COMPUTERS SP Z O O](https://appshunter.io/developer/1433978970) |

## What reviewers say

### OKCoral

[App page](https://appshunter.io/ios/app/okcoral/id1350898621)

Learn the fundamentals of coral identification and health assessment to contribute to real-world reef restoration efforts. This educational game trains you to distinguish between coral species, identify living and dead coral, and recognize signs of healthy growth.

**Highlights:** Coral species identification, Living vs. dead coral identification, Recognize fused coral growth, Citizen science training, Coral reef restoration support

**Features:** macOS Compatibility

**In-app purchases:** none


### Environmental change

[App page](https://appshunter.io/ios/app/environmental-change/id6443677096)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OKCoral free?

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

### Is Environmental change free?

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

### Do OKCoral or Environmental change have ads?

Neither OKCoral nor Environmental change 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.*