# Rockd vs Strat Mobile

The clearest difference is rating: Rockd at 4.4 against Strat Mobile's 1.0. Rockd also leads on ratings volume (187 vs 1). Strat Mobile's advantage is update cadence (monthly vs every 3 months) and iOS requirement (10.0 vs 16.6). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Rockd holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: Rockd has 187 ratings behind it against 1, so its average is the more settled of the two.

Rockd ships an update every 3 months, Strat Mobile monthly. The most recent releases landed on October 21, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Rockd | Strat Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (187 ratings)](https://appshunter.io/ios/app/rockd/id1153056624/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/strat-mobile/id1289101464/reviews) |
| Number of ratings | **187** | 1 |
| Positive reviews | 73.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free | Free |
| Size | 259 MB | 8 MB |
| Requires iOS | 16.6 | **10.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [University of Wisconsin-Madison Shared Apps](https://appshunter.io/developer/908478605) | [Richard Allmendinger](https://appshunter.io/developer/1194772609) |

## 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


### Strat Mobile

[App page](https://appshunter.io/ios/app/strat-mobile/id1289101464)

This application allows geologists to measure and record stratigraphic sections directly on their mobile devices. It offers multiple measurement methods, including using the device's camera or a traditional Jacob Staff, and automatically logs location and time data. Users can define lithology types, view statistics, and see section locations on a map.

**Highlights:** Real-time stratigraphic section plotting, Measure sections using device camera or Jacob Staff, Automatic recording of location, time, and date, Define unlimited lithology types with custom colors, Basic statistics on lithology thicknesses and percentages, View section locations on satellite or road maps

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Rockd free?

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

### Is Strat Mobile free?

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

### Which has better reviews, Rockd or Strat Mobile?

Rockd is rated higher. Rockd averages 4.4 out of 5 from 187 ratings, while Strat Mobile averages 1.0 from 1 ratings.

### Do Rockd or Strat Mobile have ads?

Neither Rockd nor Strat Mobile shows ads.

### Which is updated more often, Rockd or Strat Mobile?

Rockd ships an update every 3 months, and Strat Mobile monthly. Most recently, Rockd was updated on October 21, 2026 and Strat Mobile on October 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.*