# Gem Identifier vs Rock Scan

The clearest difference is update cadence: Rock Scan at every 4 days against Gem Identifier's every 2 weeks. Rock Scan also leads on iOS requirement (16.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Gem Identifier sells 2 in-app purchases, starting at $7.99 per 7 days and Rock Scan sells 2 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Gem Identifier ships an update every 2 weeks, Rock Scan every 4 days. The most recent releases landed on October 25, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Gem Identifier | Rock Scan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/gem-identifier-rock-scanner/id6759844200/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Size | 72 MB | 85 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Habib Yagiz Demir](https://appshunter.io/developer/1612459009) | [Dustin Jan Spyra](https://appshunter.io/developer/1883976897) |

## What reviewers say

### Gem Identifier

[App page](https://appshunter.io/ios/app/gem-identifier-rock-scanner/id6759844200)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $7.99 | per 7 days |
| Yearly Premium | $39.99 | per year |


### Rock Scan

[App page](https://appshunter.io/ios/app/rock-scan-ai-identifier/id6764779621)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rock Scan Pro Weekly | $3.99 | per 7 days |
| Rock Scan Pro Yearly | $29.99 | per year |


## Frequently asked questions

### Is Gem Identifier free?

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

### Is Rock Scan free?

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

### Do Gem Identifier or Rock Scan have ads?

Neither Gem Identifier nor Rock Scan shows ads.

### Which is updated more often, Gem Identifier or Rock Scan?

Gem Identifier ships an update every 2 weeks, and Rock Scan every 4 days. Most recently, Gem Identifier was updated on October 25, 2026 and Rock Scan on October 3, 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.*