# e vs Geology Toolkit

The clearest difference is review sentiment: e at 67% against Geology Toolkit's 0%. e also leads on monetization model (free vs free with in-app purchases). Geology Toolkit's advantage is rating (4.6 vs 3.0) and update cadence (fortnightly vs every 2 months). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. e sells 3 in-app purchases, starting at $22.99 per 3 months and Geology Toolkit sells 2 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Geology Toolkit holds the better App Store score, 4.6 against 3.0. That said, the two scores are not equally well evidenced: Geology Toolkit has 25 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 67% of e's written reviews are positive against 0% of Geology Toolkit's, so the app with the better star average is not the one people write more warmly about.

e ships an update every 2 months, Geology Toolkit fortnightly. The most recent releases landed on October 19, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | e | Geology Toolkit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/e-rocks/id1479976121/reviews) | **[4.6 (25 ratings)](https://appshunter.io/ios/app/geology-toolkit-field-guide/id6745966254/reviews)** |
| Number of ratings | 2 | **25** |
| Positive reviews | **66.7% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 52 MB | 100 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mark Wrigley](https://appshunter.io/developer/1479976120) | [Laurence Wayne](https://appshunter.io/developer/1739552943) |

## What reviewers say

### e

[App page](https://appshunter.io/ios/app/e-rocks/id1479976121)

Access a comprehensive database of over 6200 mineral species with detailed facts, including names, formulas, occurrences, and properties. This offline-capable app provides quick lookups and links to a larger online mineral catalog.

**Highlights:** 6200+ mineral species database, Detailed species information, Offline access, Links to e-Rocks.com catalog, Quick and easy to use

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| e-Rocks Collectors 3 Months | $22.99 | per 3 months |
| e-Rocks Collectors 6 Months | $39.00 | per 6 months |
| e-Rocks Collectors Annual | $79.00 | per year |


### Geology Toolkit

[App page](https://appshunter.io/ios/app/geology-toolkit-field-guide/id6745966254)

Identify rocks with AI and gain a deep understanding of their composition and formation. This app is designed for students and enthusiasts to learn geology beyond simple identification, offering clear explanations and visual tools for study and fieldwork.

**Highlights:** AI-powered rock identification, Detailed mineral composition insights, Student-friendly explanations, Sketch and visual tools for notes, Focus on geological understanding

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $2.99 | per 7 days |
| Geology AI Yearly Subscription | $24.99 | per year |


## Frequently asked questions

### Is e free?

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

### Is Geology Toolkit free?

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

### Which has better reviews, e or Geology Toolkit?

Geology Toolkit is rated higher. e averages 3.0 out of 5 from 2 ratings, while Geology Toolkit averages 4.6 from 25 ratings.

### Do e or Geology Toolkit have ads?

Neither e nor Geology Toolkit shows ads.

### Which is updated more often, e or Geology Toolkit?

e ships an update every 2 months, and Geology Toolkit fortnightly. Most recently, e was updated on October 19, 2026 and Geology Toolkit on October 12, 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.*