# Earth's Core vs Adopt

The clearest difference is rating: Adopt at 5.0 against Earth's Core's 4.3. Earth's Core's advantage is ratings volume (4 vs 1) and iOS requirement (12.0 vs 17.5). On price, review sentiment, update cadence and ads there is nothing between them.

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

Adopt holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Earth's Core ships an update every 70 months, Adopt every 40 months. The most recent releases landed on August 31, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Earth's Core | Adopt |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (4 ratings)](https://appshunter.io/ios/app/earths-core/id1220835186/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/adopt-a-float/id1473875623/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 70 months | **Every 40 months** |
| Monetization | Free | Free |
| Size | 54 MB | 1 MB |
| Requires iOS | **12.0** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Celestial Dynamics AG](https://appshunter.io/developer/997250789) | [Frederik Simons](https://appshunter.io/developer/1687712314) |

## What reviewers say

### Earth's Core

[App page](https://appshunter.io/ios/app/earths-core/id1220835186)

Explore the internal structure of our planet with a detailed view of Earth's layers. Discover the composition, temperature, and depth of each section, from the crust to the core. This educational tool provides a fascinating look beneath your feet.

**Highlights:** Visualize Earth's internal structure, Explore planet layers, Discover layer temperatures, Learn layer depths, Detailed look inside the planet

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Adopt

[App page](https://appshunter.io/ios/app/adopt-a-float/id1473875623)

Access real-time data from autonomous oceanographic floats that record seismic activity. View instrument locations, trajectories, and health parameters. This app provides a low-cost method for oceanic data collection.

**Highlights:** View MERMAID instrument locations, Access recent trajectories, Obtain ocean depth information, View instrumental metadata, Identify instruments by name and institution

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Earth's Core free?

Earth's Core is free to download, with no in-app purchases.

### Is Adopt free?

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

### Which has better reviews, Earth's Core or Adopt?

Adopt is rated higher. Earth's Core averages 4.3 out of 5 from 4 ratings, while Adopt averages 5.0 from 1 ratings.

### Do Earth's Core or Adopt have ads?

Neither Earth's Core nor Adopt shows ads.

### Which is updated more often, Earth's Core or Adopt?

Earth's Core ships an update every 70 months, and Adopt every 40 months. Most recently, Earth's Core was updated on August 31, 2026 and Adopt on June 1, 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.*