# Earth Science Explorer vs Copernicus Touchbook

The clearest difference is price: Copernicus Touchbook at Free against Earth Science Explorer's $1.99. Copernicus Touchbook also leads on update cadence (every 2 weeks vs every 2 months) and iOS requirement (9.0 vs 12.0). Earth Science Explorer's advantage is device support (3 vs 1). On ads and in-app purchases there is nothing between them.

Copernicus Touchbook is free to download; Earth Science Explorer costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Earth Science Explorer ships an update every 2 months, Copernicus Touchbook every 2 weeks. The most recent releases landed on October 29, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | Earth Science Explorer | Copernicus Touchbook |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 57 MB | 77 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | **iPad, Mac, Apple TV** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ventura Educational Systems](https://appshunter.io/developer/371324172) | [ESA - European Space Agency](https://appshunter.io/developer/429660009) |

## What reviewers say

### Earth Science Explorer

[App page](https://appshunter.io/ios/app/earth-science-explorer/id1248941619)

**In-app purchases:** none


### Copernicus Touchbook

[App page](https://appshunter.io/ios/app/copernicus-touchbook/id1438973507)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Earth Science Explorer free?

Earth Science Explorer costs $1.99, with no in-app purchases.

### Is Copernicus Touchbook free?

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

### Do Earth Science Explorer or Copernicus Touchbook have ads?

Neither Earth Science Explorer nor Copernicus Touchbook shows ads.

### Which is updated more often, Earth Science Explorer or Copernicus Touchbook?

Earth Science Explorer ships an update every 2 months, and Copernicus Touchbook every 2 weeks. Most recently, Earth Science Explorer was updated on October 29, 2026 and Copernicus Touchbook on November 11, 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.*