# Rock Identifier vs Primo Rocks

The clearest difference is rating: Primo Rocks at 5.0 against Rock Identifier's 4.3. Primo Rocks also leads on update cadence (fortnightly vs every 11 months). Rock Identifier's advantage is ratings volume (6 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Rock Identifier sells 2 in-app purchases, starting at $5.99 per 7 days and Primo Rocks sells 4 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Primo Rocks holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Rock Identifier has 6 ratings behind it against 1, so its average is the more settled of the two.

Rock Identifier ships an update every 11 months, Primo Rocks fortnightly. The most recent releases landed on October 30, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Rock Identifier | Primo Rocks |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (6 ratings)](https://appshunter.io/ios/app/rock-identifier-geolens/id6748325357/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/primo-rocks-gem-identifier/id6787458950/reviews)** |
| Number of ratings | **6** | 1 |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 62 MB | 23 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Fabulous Apps LLC](https://appshunter.io/developer/1830879287) | [Primo Technology Ltd.](https://appshunter.io/developer/1809398942) |

## What reviewers say

### Rock Identifier

[App page](https://appshunter.io/ios/app/rock-identifier-geolens/id6748325357)

Instantly identify rocks and minerals using your phone's camera. Get detailed information, ask an AI expert questions, and build a personal collection of your finds. Perfect for geology enthusiasts of all levels.

**Highlights:** Instant camera scanning for rock identification, Detailed profiles with hardness and value estimates, AI chat expert for geology questions, Personal collection library with timestamps, Confidence scores for identifications

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rock Identifier - Weekly | $5.99 | per 7 days |
| Rock Identifier - Yearly | $29.99 | per year |


### Primo Rocks

[App page](https://appshunter.io/ios/app/primo-rocks-gem-identifier/id6787458950)

Identify rocks, minerals, and fossils instantly with a photo. Discover their estimated value, origins, and fascinating stories. Build and manage your personal collection of geological finds.

**Highlights:** AI-powered rock identification, Estimated market value, Detailed physical properties, Locality maps, Lore and meaning, Personal collection building, Rock of the Day feature

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly Limited | $3.99 | per 7 days |
| Premium Weekly | $7.99 | per 7 days |
| Premium Yearly Limited | $19.99 | per year |
| Premium Yearly | $29.99 | per year |


## Frequently asked questions

### Is Rock Identifier free?

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

### Is Primo Rocks free?

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

### Which has better reviews, Rock Identifier or Primo Rocks?

Primo Rocks is rated higher. Rock Identifier averages 4.3 out of 5 from 6 ratings, while Primo Rocks averages 5.0 from 1 ratings.

### Do Rock Identifier or Primo Rocks have ads?

Neither Rock Identifier nor Primo Rocks shows ads.

### Which is updated more often, Rock Identifier or Primo Rocks?

Rock Identifier ships an update every 11 months, and Primo Rocks fortnightly. Most recently, Rock Identifier was updated on October 30, 2026 and Primo Rocks on November 10, 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.*