# DeepTime for Geology vs Hutton App

The clearest difference is in-app purchases: DeepTime for Geology at none against Hutton App's 3. DeepTime for Geology also leads on ads (none vs shown) and ratings volume (8 vs 2). Hutton App's advantage is update cadence (every 9 days vs every 3 months) and iOS requirement (15.1 vs 26.0). On price, rating and device support there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for DeepTime for Geology against 5.0 for Hutton App. Both are backed by a comparable volume of ratings — 8 and 2 respectively.

DeepTime for Geology ships an update every 3 months, Hutton App every 9 days. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | DeepTime for Geology | Hutton App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (8 ratings)](https://appshunter.io/ios/app/deeptime-for-geology/id1500200416/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/hutton-app/id6755796376/reviews) |
| Number of ratings | **8** | 2 |
| Positive reviews | 80.0% 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 | 1 MB | 61 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hunt Mountain Software](https://appshunter.io/developer/328710008) | [GeoKidz LLC](https://appshunter.io/developer/1856426044) |

## What reviewers say

### DeepTime for Geology

[App page](https://appshunter.io/ios/app/deeptime-for-geology/id1500200416)

Explore an interactive geological time scale with detailed information on each unit, including GSSP definitions and color codes. Search for terms and view GSSPs on a global map. Ideal for geologists, students, and Earth history enthusiasts.

**Highlights:** Interactive geological time scale, Detailed GSSP definitions, CMYK and RGB color codes, Searchable by name or age, Global GSSP map integration, Tips for using time terms

**Features:** Vision Pro support

**In-app purchases:** none


### 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 DeepTime for Geology free?

DeepTime for Geology 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, DeepTime for Geology or Hutton App?

DeepTime for Geology and Hutton App are both rated 5.0 out of 5 on the App Store, from 8 and 2 ratings respectively.

### Do DeepTime for Geology or Hutton App have ads?

Hutton App shows ads; DeepTime for Geology does not.

### Which is updated more often, DeepTime for Geology or Hutton App?

DeepTime for Geology ships an update every 3 months, and Hutton App every 9 days. Most recently, DeepTime for Geology was updated on November 3, 2026 and Hutton App on October 30, 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.*