# Rock Identifier vs GemRock

The clearest difference is update cadence: GemRock at every 3 weeks against Rock Identifier's every 8 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Rock Identifier sells 2 in-app purchases, starting at $0.99 per 7 days and GemRock sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Rock Identifier ships an update every 8 months, GemRock every 3 weeks. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Rock Identifier | GemRock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 weeks** |
| Size | 17 MB | 4 MB |
| Requires iOS | 18.2 | **17.6** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Colorful Software Sp. z o.o.](https://appshunter.io/developer/1811609541) | [星燃 余](https://appshunter.io/developer/1821083399) |

## What reviewers say

### Rock Identifier

[App page](https://appshunter.io/ios/app/rock-identifier-id-gems/id6745274148)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3-Day Trial | $0.99 | per 7 days |
| Monthly Plan | $2.99 | per month |


### GemRock

[App page](https://appshunter.io/ios/app/gemrock-stone-identifier/id6786309743)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| StoneLens Pro (Weekly) | $4.99 | per 7 days |
| StoneLens Pro (Monthly) | $7.99 | per month |
| StoneLens Pro (Yearly) | $29.99 | per year |


## Frequently asked questions

### Is Rock Identifier free?

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

### Is GemRock free?

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

### Do Rock Identifier or GemRock have ads?

Neither Rock Identifier nor GemRock shows ads.

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

Rock Identifier ships an update every 8 months, and GemRock every 3 weeks. Most recently, Rock Identifier was updated on November 8, 2026 and GemRock on October 31, 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.*