# RockSpin vs Hutton App

The clearest difference is ads: RockSpin at none against Hutton App's shown. Hutton App's advantage is device support (3 vs 1). On price, update cadence, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. RockSpin sells 3 in-app purchases, starting at $9.99 per month and Hutton App sells 3 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

RockSpin ships an update fortnightly, Hutton App every 9 days. The most recent releases landed on September 17, 2026 and June 10, 2026 respectively.

## The numbers

| Metric | RockSpin | Hutton App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/hutton-app/id6755796376/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 9 days** |
| Monetization | — | Free with in-app purchases |
| Size | 80 MB | 61 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [WOOHYUN JEON](https://appshunter.io/developer/1823158371) | [GeoKidz LLC](https://appshunter.io/developer/1856426044) |

## What reviewers say

### RockSpin

[App page](https://appshunter.io/ios/app/rockspin/id6747876962)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $9.99 | per month |
| Pro Yearly | $99.99 | per year |
| 1,000 Credits | $14.99 | one-time |


### 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 RockSpin free?

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

### Is Hutton App free?

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

### Do RockSpin or Hutton App have ads?

Hutton App shows ads; RockSpin does not.

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

RockSpin ships an update fortnightly, and Hutton App every 9 days. Most recently, RockSpin was updated on September 17, 2026 and Hutton App on June 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.*