# Earth Primer vs Cretapedia

The clearest difference is price: Cretapedia at Free against Earth Primer's $9.99. Cretapedia also leads on ratings volume (1.7K vs 35) and device support (3 vs 1). Earth Primer's advantage is in-app purchases (none vs 11) and review sentiment (75% vs 44%). On rating, update cadence and ads there is nothing between them.

Cretapedia is free to download; Earth Primer costs $9.99 up front. Cretapedia sells 10 in-app purchases, starting at $13.99 per month. Earth Primer asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for Earth Primer against 4.6 for Cretapedia. That said, the two scores are not equally well evidenced: Cretapedia has 1.7K ratings behind it against 35, so its average is the more settled of the two. Written reviews are what separate them: 75% of Earth Primer's written reviews are positive against 44% of Cretapedia's.

Earth Primer ships an update every 3 weeks, Cretapedia monthly. The most recent releases landed on June 9, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Earth Primer | Cretapedia |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.7 (35 ratings)](https://appshunter.io/ios/app/earth-primer/id956678532/reviews)** | [4.6 (1.7K ratings)](https://appshunter.io/ios/app/cretapedia-science-learning/id6446936735/reviews) |
| Number of ratings | 35 | **1.7K** |
| Positive reviews | **75.4% of reviews** | 43.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 185 MB | 227 MB |
| Requires iOS | **7.0** | 13.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Chaim Gingold](https://appshunter.io/developer/328361943) | [AMAZING EDTECH PTE. LTD.](https://appshunter.io/developer/1597060777) |

## What reviewers say

### Earth Primer

[App page](https://appshunter.io/ios/app/earth-primer/id956678532)

Explore Earth's geological processes through interactive play. Sculpt mountains, create volcanoes, and manipulate natural forces to understand planetary science in a fun, engaging way.

**Highlights:** Discover how Earth works through play, Control natural forces like volcanoes and tectonic plates, 20 different tools to unlock, Richly interactive geological simulations, Five chapters: Earth's Interior, Surface, Water Cycle, Biomes, and Sandbox, Sandbox mode for open-ended play

**In-app purchases:** none


### Cretapedia

[App page](https://appshunter.io/ios/app/cretapedia-science-learning/id6446936735)

An ad-free educational app for children aged 5-12, offering engaging science lessons through interactive 3D animations and fun quizzes. It covers over 20 topics, fostering curiosity and developing critical thinking skills in a playful, story-driven environment.

**Highlights:** 20+ science topics, Bite-sized lessons, Fun quizzes, 3D animations, Interactive models, Develops critical thinking, Story-driven content

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MONTHLY-30 DAYS FREE | $13.99 | per month |
| MONTHLY-7 DAYS FREE | $13.99 | per month |
| MONTHLY-BASIC | $13.99 | per month |
| YEARLY-PROMOTION | $119.99 | per year |
| YEARLY-PROMOTION | $119.99 | per year |
| YEARLY-BASIC | $119.99 | per year |
| YEARLY-7 DAYS FREE | $119.99 | per year |
| Ccoin | $10.00 | one-time |
| Ccoins | $20.00 | one-time |
| Ccoins | $50.00 | one-time |

**What reviewers like**

- 👍 Great learning app for kids
- 🚀 Amazing way to learn
- 💡 Engaging and interactive content
- 👍 Excellent for homeschooling
- 👍 Teaches advanced content in an easy-to-understand way

**What reviewers complain about**

- 🐛 Glitches and crashes
- 🔒 Misleading subscription practices
- 💡 Limited content and features
- 💡 Not available in other languages
- 🔒 Poor customer support

**Reported bugs**

- Subscription issues and inability to access paid content
- App closing during sign-up process
- Compatibility issues with older devices

**Requested features**

- Add more dinosaur content and battles
- Improve quiz and review features
- Offer a more affordable subscription model
- Provide a neutral perspective on religious topics


## Frequently asked questions

### Is Earth Primer free?

Earth Primer costs $9.99, with no in-app purchases.

### Is Cretapedia free?

Cretapedia is free to download, with in-app purchases available.

### Which has better reviews, Earth Primer or Cretapedia?

Earth Primer is rated higher. Earth Primer averages 4.7 out of 5 from 35 ratings, while Cretapedia averages 4.6 from 1.7K ratings.

### Do Earth Primer or Cretapedia have ads?

Neither Earth Primer nor Cretapedia shows ads.

### Which is updated more often, Earth Primer or Cretapedia?

Earth Primer ships an update every 3 weeks, and Cretapedia monthly. Most recently, Earth Primer was updated on June 9, 2026 and Cretapedia on September 21, 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.*