# Nimmo vs Rock Identifier

The clearest difference is in-app purchases: Nimmo at none against Rock Identifier's 2. Nimmo also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Rock Identifier sells 2 in-app purchases, starting at $2.99 per 7 days. Nimmo asks for nothing beyond the download.

Nimmo ships an update every 5 months, Rock Identifier every 3 months. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Nimmo | Rock Identifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/rock-identifier-ai-scanner-id/id6587572110/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | — | Free with in-app purchases |
| Size | 36 MB | 5 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Calvin TALLE](https://appshunter.io/developer/1662904798) | [CHARAFA BOUKHALFA](https://appshunter.io/developer/1561258175) |

## What reviewers say

### Nimmo

[App page](https://appshunter.io/ios/app/nimmo-auto/id1662904796)

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

**In-app purchases:** none


### Rock Identifier

[App page](https://appshunter.io/ios/app/rock-identifier-ai-scanner-id/id6587572110)

Identify rocks and crystals instantly by snapping a photo. Get detailed information about their name, type, characteristics, formation, and history. Save your discoveries in a personal collection.

**Highlights:** Instant rock and crystal identification via photo, Detailed information on name, type, and characteristics, Fascinating facts about formation and history, Personal collection to save identified items, Unlimited identifications and saving with premium

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $2.99 | per 7 days |
| Yearly Premium | $19.99 | per year |


## Frequently asked questions

### Is Nimmo free?

Nimmo is free to download, with no in-app purchases.

### Is Rock Identifier free?

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

### Do Nimmo or Rock Identifier have ads?

Neither Nimmo nor Rock Identifier shows ads.

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

Nimmo ships an update every 5 months, and Rock Identifier every 3 months. Most recently, Nimmo was updated on November 3, 2026 and Rock Identifier on November 4, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*