# Project SPECTRA! vs Phylum Echinodermata

The clearest difference is device support: Phylum Echinodermata at 3 against Project SPECTRA!'s 1. On price, ads, in-app purchases and iOS requirement 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 | Project SPECTRA! | Phylum Echinodermata |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 33 months | — |
| Size | 13 MB | 40 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [University of Colorado Boulder](https://appshunter.io/developer/972210292) | [Science Education Institute](https://appshunter.io/developer/1439710468) |

## What reviewers say

### Project SPECTRA!

[App page](https://appshunter.io/ios/app/project-spectra/id1561634722)

**Features:** macOS Compatibility

**In-app purchases:** none


### Phylum Echinodermata

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Project SPECTRA! free?

Project SPECTRA! is free to download, with no in-app purchases.

### Is Phylum Echinodermata free?

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

### Do Project SPECTRA! or Phylum Echinodermata have ads?

Neither Project SPECTRA! nor Phylum Echinodermata 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.*