# Stone Identifier vs Rock Identifier

The clearest difference is ads: Rock Identifier at none against Stone Identifier's shown. Rock Identifier also leads on update cadence (every 9 days vs every 3 months). Stone Identifier's advantage is review sentiment (23% vs 14%) and ratings volume (1.1K vs 292). On price, rating, in-app purchases and monetization model there is nothing between them.

Both are free to download. Stone Identifier sells 10 in-app purchases, starting at $2.99 per 7 days and Rock Identifier sells 9 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.3 for Stone Identifier against 4.2 for Rock Identifier. Both are backed by a comparable volume of ratings — 1.1K and 292 respectively. Written reviews are what separate them: 23% of Stone Identifier's written reviews are positive against 14% of Rock Identifier's.

Stone Identifier ships an update every 3 months, Rock Identifier every 9 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Stone Identifier | Rock Identifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (1.1K ratings)](https://appshunter.io/ios/app/stone-identifier/id6443684085/reviews)** | [4.2 (292 ratings)](https://appshunter.io/ios/app/rock-identifier-crystal-gem/id6553989682/reviews) |
| Number of ratings | **1.1K** | 292 |
| Positive reviews | **23.0% of reviews** | 13.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 9 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 64 MB | 100 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Apps Labs](https://appshunter.io/developer/1648354195) | [Lumos apps](https://appshunter.io/developer/1535604225) |

## What reviewers say

### Stone Identifier

[App page](https://appshunter.io/ios/app/stone-identifier/id6443684085)

Instantly identify rocks, stones, gems, and crystals by taking a photo or uploading an image. Get accurate results in seconds with a rich database and user-friendly interface. Perfect for both geologists and enthusiasts.

**Highlights:** Identify Rocks, Gems, and Crystals, Accurate identification results, Fast and convenient tool, Extensive learning database, User-friendly interface, Record geological findings

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rock Identifier | $2.99 | per 7 days |
| Rock ID | $2.99 | per 7 days |
| Rock Identifier | $6.99 | per 7 days |
| Rock ID | $6.99 | per 7 days |
| Sale annual subscription | $9.99 | per year |
| Rock Identifier | $9.99 | per month |
| Stone ID | $14.99 | per month |
| Stone Identifier | $19.99 | per year |
| Rock ID | $19.99 | per year |
| Stone Identifier | $39.99 | per year |

**What reviewers like**

- ⭐ Accurate rock identification
- 🔍 Comprehensive mineral classification
- 👍 User-friendly interface

**What reviewers complain about**

- 🤔 Inconsistent or inaccurate results
- 💰 Paywall for full functionality
- 🚫 Limited free scans
- 📚 Inability to identify rare/mixed gems

**Reported bugs**

- Misidentifies known mineral samples
- Provides incorrect or confusing results

**Requested features**

- Expand free scan limit
- Improve accuracy and precision
- Add history/save feature
- Enhance identification for rare/mixed gems


### Rock Identifier

[App page](https://appshunter.io/ios/app/rock-identifier-crystal-gem/id6553989682)

Instantly identify stones, gems, minerals, and crystals using your device's camera. Get detailed information on composition, formation, and common uses. Organize your discoveries and learn about their properties.

**Highlights:** Instant rock and crystal identification via photo, Detailed information on mineral composition, hardness, and origin, Gemstone authentication guide, Extensive rock and crystal encyclopedia, Personal rock collection manager, AI accuracy with confidence levels

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |
| Weekly | $4.99 | per 7 days |
| Monthly | $4.99 | per month |
| Monthly | $9.99 | per month |
| Yearly Special Offer | $14.99 | per year |
| Yearly offer | $14.99 | per year |
| Yearly Subscription | $19.99 | per year |
| Yearly | $19.99 | per year |
| Yearly | $29.99 | per year |

**What reviewers like**

- 👍 Accurate identification (initially)
- 👍 Good information on stones
- 👍 Impressive accuracy rating (for some)
- 👍 Provides articles and insights

**What reviewers complain about**

- 😞 Does not identify stones
- 😞 Server connection errors
- 😞 Misidentifies stones
- 😞 Requires payment for full functionality
- 😞 Paid features stop working

**Reported bugs**

- App stops identifying stones after purchase
- Server connection errors
- App misidentifies stones
- App states photos are too blurry
- App stopped working after an update

**Requested features**

- Fix identification issues
- Improve server connection
- Restore lost features after update
- Provide accurate identification consistently
- Respond to user issues


## Frequently asked questions

### Is Stone Identifier free?

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

### Is Rock Identifier free?

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

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

Stone Identifier is rated higher. Stone Identifier averages 4.3 out of 5 from 1.1K ratings, while Rock Identifier averages 4.2 from 292 ratings.

### Do Stone Identifier or Rock Identifier have ads?

Stone Identifier shows ads; Rock Identifier does not.

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

Stone Identifier ships an update every 3 months, and Rock Identifier every 9 days. Most recently, Stone Identifier was updated on October 25, 2026 and Rock Identifier 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.*