# MartleyRocks vs Geology Toolkit

The clearest difference is in-app purchases: MartleyRocks at none against Geology Toolkit's 2. MartleyRocks also leads on iOS requirement (11.0 vs 15.6). Geology Toolkit's advantage is update cadence (fortnightly vs every 46 months). On price, ads and device support there is nothing between them.

Both are free to download. Geology Toolkit sells 2 in-app purchases, starting at $2.99 per 7 days. MartleyRocks asks for nothing beyond the download.

MartleyRocks ships an update every 46 months, Geology Toolkit fortnightly. The most recent releases landed on October 14, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | MartleyRocks | Geology Toolkit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (28 ratings)](https://appshunter.io/ios/app/geology-toolkit-field-guide/id6745966254/reviews)** |
| Number of ratings | — | **28** |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 46 months | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Size | 65 MB | 100 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Michael Brooks](https://appshunter.io/developer/526071845) | [Laurence Wayne](https://appshunter.io/developer/1739552943) |

## What reviewers say

### MartleyRocks

[App page](https://appshunter.io/ios/app/martleyrocks/id1006570855)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 MartleyRocks free?

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

### Is Geology Toolkit free?

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

### Do MartleyRocks or Geology Toolkit have ads?

Neither MartleyRocks nor Geology Toolkit shows ads.

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

MartleyRocks ships an update every 46 months, and Geology Toolkit fortnightly. Most recently, MartleyRocks was updated on October 14, 2026 and Geology Toolkit on October 26, 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.*