# Rockd vs Hutton App

The clearest difference is rating: Hutton App at 5.0 against Rockd's 4.4. Hutton App also leads on update cadence (every 9 days vs every 3 months). Rockd's advantage is in-app purchases (none vs 3) and ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Hutton App sells 3 in-app purchases, starting at $5.99 per month. Rockd asks for nothing beyond the download.

Hutton App holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Rockd has 185 ratings behind it against 2, so its average is the more settled of the two.

Rockd ships an update every 3 months, Hutton App every 9 days. The most recent releases landed on October 13, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Rockd | Hutton App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (185 ratings)](https://appshunter.io/ios/app/rockd/id1153056624/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/hutton-app/id6755796376/reviews)** |
| Number of ratings | **185** | 2 |
| Positive reviews | 73.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 9 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 259 MB | 61 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [University of Wisconsin-Madison Shared Apps](https://appshunter.io/developer/908478605) | [GeoKidz LLC](https://appshunter.io/developer/1856426044) |

## What reviewers say

### Rockd

[App page](https://appshunter.io/ios/app/rockd/id1153056624)

Discover and document the geology around you. Access global geologic maps, 3D globes, and detailed summaries of your surroundings. Contribute your own observations and track your exploration of Earth's geologic history.

**Highlights:** Interactive global geologic maps, 3D virtual globe exploration, Field observation logging, Offline map caching, Paleogeographic map access, Stratigraphic column viewing, Geologic literature integration

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

**In-app purchases:** none

**What reviewers like**

- 🗺️ Comprehensive geological maps with detailed information
- 💡 Innovative integration of peer-reviewed references and literature
- 🧭 Built-in Brunton compass and clinometer tools
- 📱 User-friendly interface and intuitive navigation
- 🌍 Global coverage with paleomaps and stratigraphic data

**What reviewers complain about**

- 🐛 Black map display issues in offline and online modes
- 📍 GPS tracking and real-time position updates failing
- 🔌 Offline functionality severely limited or broken
- 🔐 Persistent login requirement without password saving
- ⚠️ Error dialogs that won't dismiss

**Reported bugs**

- Black map display in airplane mode and online
- Persistent error dialogs that cannot be dismissed
- GPS not tracking in real-time
- Offline check-ins not syncing properly
- Sign-up page jumps between fields and login page

**Requested features**

- Follow/friend mechanic to track other users' check-ins
- Rock identification tool from photo uploads
- Offline map download with customizable zoom levels
- Stereonet tool for structural geology
- Groundwater/aquifer information section


### Hutton App

[App page](https://appshunter.io/ios/app/hutton-app/id6755796376)

Explore Earth's geologic wonders with this comprehensive field guide. Identify rocks and minerals using AI or manual methods, access professional geologic maps, and discover over 32,000 rockhounding sites. Document your expeditions with GPS-tagged notes and photos, and connect with a global community of geology enthusiasts.

**Highlights:** Professional geologic maps, Real-time data updates, AI rock and mineral identification, Manual identification mode, 32,000+ rockhounding sites, GPS-tagged trip documentation, Integrated geology dictionary

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hutton Premium Monthly | $5.99 | per month |
| Hutton Premium Six month | $29.99 | per 6 months |
| Hutton Yearly Monthly | $47.99 | per year |


## Frequently asked questions

### Is Rockd free?

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

### Is Hutton App free?

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

### Which has better reviews, Rockd or Hutton App?

Hutton App is rated higher. Rockd averages 4.4 out of 5 from 185 ratings, while Hutton App averages 5.0 from 2 ratings.

### Do Rockd or Hutton App have ads?

Hutton App shows ads; Rockd does not.

### Which is updated more often, Rockd or Hutton App?

Rockd ships an update every 3 months, and Hutton App every 9 days. Most recently, Rockd was updated on October 13, 2026 and Hutton App on September 18, 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.*