# e vs Geology365

The clearest difference is price: e at Free against Geology365's $2.99. Geology365's advantage is rating (4.0 vs 3.0) and in-app purchases (none vs 3). On ratings volume, update cadence, ads and device support there is nothing between them.

e is free to download; Geology365 costs $2.99 up front. e sells 3 in-app purchases, starting at $22.99 per 3 months. Geology365 asks for nothing beyond the download.

Geology365 holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews point the same way: 67% of e's written reviews are positive against 100% of Geology365's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 19, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | e | Geology365 |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/e-rocks/id1479976121/reviews) | **[4.0 (2 ratings)](https://appshunter.io/ios/app/geology365/id6747565969/reviews)** |
| Number of ratings | 2 | 2 |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | **Free** | Paid |
| Best chart rank | — | **#200** |
| Size | 52 MB | 40 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mark Wrigley](https://appshunter.io/developer/1479976120) | [Ryan Mark Klockner](https://appshunter.io/developer/1813869488) |

## 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 |


### Geology365

[App page](https://appshunter.io/ios/app/geology365/id6747565969)

**Currently charting:** #200 Top Paid · Education (US App Store)

Organize and catalog your mineral collection with this app. Document specimens with photos and details like name, origin, size, value, and acquisition history. Access your collection offline for easy field use.

**Highlights:** Mineral collection cataloging, Specimen documentation with photos, Track specimen details (name, origin, size, value), Acquisition history tracking, Offline access, Searchable collection

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

**In-app purchases:** none


## Frequently asked questions

### Is e free?

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

### Is Geology365 free?

Geology365 costs $2.99, with no in-app purchases.

### Which has better reviews, e or Geology365?

Geology365 is rated higher. e averages 3.0 out of 5 from 2 ratings, while Geology365 averages 4.0 from 2 ratings.

### Do e or Geology365 have ads?

Neither e nor Geology365 shows ads.

### Which is updated more often, e or Geology365?

e ships an update every 2 months, and Geology365 every 2 months. Most recently, e was updated on October 19, 2026 and Geology365 on October 25, 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.*