# Stone Identifier vs STAFF (ST JEROME)

The clearest difference is in-app purchases: STAFF (ST JEROME) at none against Stone Identifier's 10. STAFF (ST JEROME) also leads on ads (none vs shown) and device support (3 vs 1). On price, update cadence and iOS requirement there is nothing between them.

Both are free to download. Stone Identifier sells 10 in-app purchases, starting at $2.99 per 7 days. STAFF (ST JEROME) asks for nothing beyond the download.

Stone Identifier ships an update every 3 months, STAFF (ST JEROME) every 2 months. The most recent releases landed on October 20, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Stone Identifier | STAFF (ST JEROME) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (1.1K ratings)](https://appshunter.io/ios/app/stone-identifier/id6443684085/reviews)** | — |
| Number of ratings | **1.1K** | — |
| Positive reviews | 23.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free with in-app purchases | — |
| Size | 64 MB | 186 MB |
| Requires iOS | 16.6 | **15.6** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Apps Labs](https://appshunter.io/developer/1648354195) | [Suresh Choudhary](https://appshunter.io/developer/1617979510) |

## 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


### STAFF (ST JEROME)

[App page](https://appshunter.io/ios/app/staff-st-jerome/id6476397748)

**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 STAFF (ST JEROME) free?

STAFF (ST JEROME) is free to download, with no in-app purchases.

### Do Stone Identifier or STAFF (ST JEROME) have ads?

Stone Identifier shows ads; STAFF (ST JEROME) does not.

### Which is updated more often, Stone Identifier or STAFF (ST JEROME)?

Stone Identifier ships an update every 3 months, and STAFF (ST JEROME) every 2 months. Most recently, Stone Identifier was updated on October 20, 2026 and STAFF (ST JEROME) on October 5, 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.*