# Gems Detector vs Rock Identifier

The clearest difference is update cadence: Rock Identifier at every 9 days against Gems Detector's every 2 months. Gems Detector's advantage is iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Gems Detector sells 3 in-app purchases, starting at $2.99 per month and Rock Identifier sells 3 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Gems Detector ships an update every 2 months, Rock Identifier every 9 days. The most recent releases landed on September 15, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Gems Detector | Rock Identifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (232 ratings)](https://appshunter.io/ios/app/rock-identifier-gem-value/id6752249234/reviews)** |
| Number of ratings | — | **232** |
| Positive reviews | — | 70.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 9 days** |
| Monetization | — | Free with in-app purchases |
| Size | 76 MB | 52 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [WINAPP LTD](https://appshunter.io/developer/1802355689) | [nurten cay](https://appshunter.io/developer/1835928050) |

## What reviewers say

### Gems Detector

[App page](https://appshunter.io/ios/app/gems-detector/id6736705501)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $2.99 | per month |
| 3 months subscription | $4.99 | per 3 months |
| Yearly subscription | $7.99 | per year |


### Rock Identifier

[App page](https://appshunter.io/ios/app/rock-identifier-gem-value/id6752249234)

Identify rocks, minerals, crystals, and gemstones instantly with a photo. Get detailed information on properties, hardness, and value. Learn to distinguish authentic stones from imitations.

**Highlights:** Instant rock, mineral, crystal & gemstone identification, Detailed stone information (name, hardness, properties), Estimated gemstone value ranges & rarity insights, Authenticity indicators for imitations/treatments, Compare similar stones, Save favorites and build a collection

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| rock_weekly | $6.99 | per 7 days |
| rock_yearly | $39.99 | per year |
| rock_yearly_free_trial | $49.99 | per year |


## Frequently asked questions

### Is Gems Detector free?

Gems Detector is free to download, with in-app purchases available.

### Is Rock Identifier free?

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

### Do Gems Detector or Rock Identifier have ads?

Neither Gems Detector nor Rock Identifier shows ads.

### Which is updated more often, Gems Detector or Rock Identifier?

Gems Detector ships an update every 2 months, and Rock Identifier every 9 days. Most recently, Gems Detector was updated on September 15, 2026 and Rock Identifier on September 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.*