# Stone Identifier vs Geomaster

The clearest difference is review sentiment: Geomaster at 100% against Stone Identifier's 16%. Geomaster also leads on rating (5.0 vs 4.4) and in-app purchases (none vs 10). Stone Identifier's advantage is ratings volume (1.5K vs 4) and update cadence (every 3 weeks vs every 3 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Stone Identifier sells 10 in-app purchases, starting at $4.99 per 7 days. Geomaster asks for nothing beyond the download.

Geomaster holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Stone Identifier has 1.5K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 16% of Stone Identifier's written reviews are positive against 100% of Geomaster's.

Stone Identifier ships an update every 3 weeks, Geomaster every 3 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Stone Identifier | Geomaster |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (1.5K ratings)](https://appshunter.io/ios/app/stone-identifier-rock-finder/id1608573202/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/geomaster/id6520384624/reviews)** |
| Number of ratings | **1.5K** | 4 |
| Positive reviews | 16.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 185 MB | 11 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [App Holdings](https://appshunter.io/developer/808581339) | [Jacques Brayel Tchouanmoe](https://appshunter.io/developer/1560440986) |

## What reviewers say

### Stone Identifier

[App page](https://appshunter.io/ios/app/stone-identifier-rock-finder/id1608573202)

Identify rocks, minerals, and crystals from photos with high accuracy. Explore their properties, discover nearby deposits on a map, and build your own digital collection. Learn fascinating facts about stones from around the world.

**Highlights:** Accurate rock identification from photos, Study physical and chemical properties, Discover nearby rock deposits on a map, Create and manage a personal rock collection, Learn about thousands of rock types

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RockPlatinum Weekly | $4.99 | per 7 days |
| RockPlatinum Weekly with Trial | $4.99 | per 7 days |
| RockPlatinum Weekly with Trial | $5.99 | per 7 days |
| RockPlatinum Weekly | $5.99 | per 7 days |
| RockPlatinum Weekly 7day Trial | $5.99 | per 7 days |
| RockPlatinum Monthly Access | $9.99 | per month |
| RockPlatinum Monthly + Trial | $9.99 | per month |
| Rock Seeker Platinum Annual | $29.99 | per year |
| RockPlatinum Annual 3day Trial | $29.99 | per year |
| Rock Seeker Platinum Annual | $39.99 | per year |

**What reviewers like**

- 🤗 Helpful for identifying rocks and minerals
- 🧠 Informative details on specimens
- 👨‍🏫 Educational for students and kids

**What reviewers complain about**

- 🤷‍♂️ Inconsistent and inaccurate identification results
- 💰 Expensive subscription model
- 🔒 Difficult to cancel subscription
- 🙅‍♀️ Limited free usage
- 🤖 Feels like an automated response rather than a knowledgeable app

**Reported bugs**

- App crashes or freezes during use
- Server connection issues prevent identification
- Incorrect or nonsensical identification results

**Requested features**

- Allow manual rock/mineral identification input
- Provide more detailed information on each specimen
- Improve accuracy of identification algorithms
- Offer a one-time purchase option instead of subscription


### Geomaster

[App page](https://appshunter.io/ios/app/geomaster/id6520384624)

This app serves as a comprehensive field and study companion for geology enthusiasts, students, and professionals. It offers integrated geological tools for measurement, reference, and identification, supporting both academic exploration and real-world fieldwork.

**Highlights:** Strike and Dip Compass, Trend and Plunge Compass, Geological Time Scale, Geological Dictionary, Rock Identification Trees, Mineral Classification

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Stone Identifier free?

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

### Is Geomaster free?

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

### Which has better reviews, Stone Identifier or Geomaster?

Geomaster is rated higher. Stone Identifier averages 4.4 out of 5 from 1.5K ratings, while Geomaster averages 5.0 from 4 ratings.

### Do Stone Identifier or Geomaster have ads?

Stone Identifier shows ads; Geomaster does not.

### Which is updated more often, Stone Identifier or Geomaster?

Stone Identifier ships an update every 3 weeks, and Geomaster every 3 months. Most recently, Stone Identifier was updated on November 3, 2026 and Geomaster on October 30, 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.*