# Phylum Echinodermata vs XR Heart Attack

Phylum Echinodermata and XR Heart Attack are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | Phylum Echinodermata | XR Heart Attack |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Size | 40 MB | 308 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Science Education Institute](https://appshunter.io/developer/1439710468) | [XR Anatomy LTD](https://appshunter.io/developer/1678394572) |

## What reviewers say

### Phylum Echinodermata

[App page](https://appshunter.io/ios/app/phylum-echinodermata/id6743053421)

**Features:** macOS Compatibility

**In-app purchases:** none


### XR Heart Attack

[App page](https://appshunter.io/ios/app/xr-heart-attack/id6745051564)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Phylum Echinodermata free?

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

### Is XR Heart Attack free?

XR Heart Attack is free to download, with no in-app purchases.

### Do Phylum Echinodermata or XR Heart Attack have ads?

Neither Phylum Echinodermata nor XR Heart Attack 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.*