# Rock vs H&A Evidence

The clearest difference is in-app purchases: H&A Evidence at none against Rock's 3. Rock's advantage is update cadence (every 3 weeks vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Rock sells 3 in-app purchases, starting at $3.99 per 7 days. H&A Evidence asks for nothing beyond the download.

Rock ships an update every 3 weeks, H&A Evidence every 3 months. The most recent releases landed on November 4, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Rock | H&A Evidence |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (65 ratings)](https://appshunter.io/ios/app/rock-scan/id6498787560/reviews)** | — |
| Number of ratings | **65** | — |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 87 MB | 31 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dovran Muhammetrustemov](https://appshunter.io/developer/1741797293) | [iDCSGroup LLC](https://appshunter.io/developer/1763351875) |

## What reviewers say

### Rock

[App page](https://appshunter.io/ios/app/rock-scan/id6498787560)

This application allows users to scan and identify rocks and minerals directly from their mobile device. It provides a convenient way to learn about geological samples encountered in everyday life.

**Highlights:** Scan rocks and minerals, Identify geological samples, Mobile identification tool, Learn about rock types

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Access Rock-Scan pro weekly | $3.99 | per 7 days |
| Access Rock-Scan pro monthly | $9.99 | per month |
| Access Rock-Scan pro yearly | $59.99 | per year |

**What reviewers like**

- 👍 User-friendly interface
- 🚀 Fast identification
- 💡 Educational content
- 💎 Accurate rock identification
- ✨ Identifies non-rocks

**What reviewers complain about**

- 🐛 Inaccurate information
- 🐛 App doesn't work after update
- 🐛 Identified as pastry/cake/metal/charcoal/pottery
- 🐛 Cannot identify common rocks
- 🐛 Identified as not a rock or mineral

**Reported bugs**

- App doesn't work after update
- Failed to connect
- Identified as not a rock or mineral
- Cannot identify common rocks
- Inaccurate identification of some rocks


### H&A Evidence

[App page](https://appshunter.io/ios/app/h-and-a-evidence/id6695736421)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Rock free?

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

### Is H&A Evidence free?

H&A Evidence is free to download, with no in-app purchases.

### Do Rock or H&A Evidence have ads?

Neither Rock nor H&A Evidence shows ads.

### Which is updated more often, Rock or H&A Evidence?

Rock ships an update every 3 weeks, and H&A Evidence every 3 months. Most recently, Rock was updated on November 4, 2026 and H&A Evidence on November 8, 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.*