# Rock Identifier vs Geomaster

The clearest difference is review sentiment: Geomaster at 100% against Rock Identifier's 64%. Geomaster also leads on in-app purchases (none vs 17) and rating (5.0 vs 4.7). Rock Identifier's advantage is ratings volume (82K vs 4) and update cadence (every 3 weeks vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Rock Identifier sells 9 in-app purchases, starting at $3.99 per 7 days. Geomaster asks for nothing beyond the download.

Geomaster holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Rock Identifier has 82K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 64% of Rock Identifier's written reviews are positive against 100% of Geomaster's.

Rock Identifier ships an update every 3 weeks, Geomaster every 3 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Rock Identifier | Geomaster |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (82K ratings)](https://appshunter.io/ios/app/rock-identifier-stone-id/id1546796934/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/geomaster/id6520384624/reviews)** |
| Number of ratings | **82K** | 4 |
| Positive reviews | 64.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Freemium | **Free** |
| Best chart rank | **#34** | — |
| Size | 201 MB | 11 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Next Vision Limited](https://appshunter.io/developer/1532006906) | [Jacques Brayel Tchouanmoe](https://appshunter.io/developer/1560440986) |

## What reviewers say

### Rock Identifier

[App page](https://appshunter.io/ios/app/rock-identifier-stone-id/id1546796934)

**Currently charting:** #34 Top Grossing · Education, #123 Top Free · Education (US App Store)

Instantly identify rocks, minerals, and gemstones by taking a photo. Access a comprehensive encyclopedia with detailed information on each stone, learn to distinguish real from fake gems, and explore their properties. The app also includes a metal detector and expert consultation.

**Highlights:** Photo-based rock identification, Stone and crystal encyclopedia, Real vs. fake gemstone guide, Healing properties and zodiac stones, In-app metal detector, Expert consultation service, Personal rock collection management

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rock Identifier Premium | $3.99 | per 7 days |
| Rock Identifier Premium | $7.99 | per month |
| Rock Identifier Premium | $29.99 | per year |
| Rock Identifier Premium | $39.99 | per year |
| Rock Identifier Premium | $39.99 | per year |
| Rock Identifier Premium | $39.99 | per year |
| Rock Identifier Premium | $69.99 | per year |
| Rock Unlock New Skin | $1.99 | one-time |
| Rock Identifier Premium | $69.99 | one-time |

**What reviewers like**

- 🤩 Accurate rock identification
- 🤓 Extensive information on rocks
- 🧠 Helpful for learning about rocks
- 🪨 Great for rock collectors
- 🤖 Powerful AI-based identification

**What reviewers complain about**

- 💰 Expensive subscription model
- 🔢 Limited free scans per day
- 🔍 Inconsistent accuracy, sometimes wrong
- 🔀 Gives different results for same rock
- 🙅‍♀️ Poor customer support

**Reported bugs**

- App crashes or freezes
- Subscription issues and unexpected charges
- Inaccurate rock identification
- Inability to delete or edit rock entries

**Requested features**

- Ability to manually input rock names
- Option to create and manage rock collections
- More comprehensive rock/mineral database
- Improved search and filtering capabilities
- Offline mode for rock identification


### 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 Rock Identifier free?

Rock 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, Rock Identifier or Geomaster?

Geomaster is rated higher. Rock Identifier averages 4.7 out of 5 from 82K ratings, while Geomaster averages 5.0 from 4 ratings.

### Do Rock Identifier or Geomaster have ads?

Neither Rock Identifier nor Geomaster shows ads.

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

Rock Identifier ships an update every 3 weeks, and Geomaster every 3 months. Most recently, Rock Identifier was updated on October 29, 2026 and Geomaster on October 24, 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.*