# Rock Identifier vs Crystal Identifier

The clearest difference is iOS requirement: Rock Identifier at 15.1 against Crystal Identifier's 17.6. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Rock Identifier sells 3 in-app purchases, starting at $6.99 per 7 days and Crystal Identifier sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Rock Identifier | Crystal Identifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (234 ratings)](https://appshunter.io/ios/app/rock-identifier-gem-value/id6752249234/reviews)** | — |
| Number of ratings | **234** | — |
| Positive reviews | 70.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 52 MB | 5 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [nurten cay](https://appshunter.io/developer/1835928050) | [Swapnil Jain](https://appshunter.io/developer/1858553727) |

## What reviewers say

### 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 |


### Crystal Identifier

[App page](https://appshunter.io/ios/app/crystal-identifier-gem-scan/id6757094565)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Crystal Identifier Premium - Weekly | $4.99 | per 7 days |
| Crystal Identifier Premium - Yearly | $24.99 | per year |


## Frequently asked questions

### Is Rock Identifier free?

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

### Is Crystal Identifier free?

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

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

Neither Rock Identifier nor Crystal Identifier shows ads.

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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.*