# CrowdMag vs StraboField

The clearest difference is update cadence: StraboField at every 2 weeks against CrowdMag's every 2 months. StraboField also leads on rating (4.5 vs 4.3). On price, review sentiment, ratings volume and ads there is nothing between them.

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

StraboField holds the better App Store score, 4.5 against 4.3. Both are backed by a comparable volume of ratings — 24 and 19 respectively. Written reviews complicate that: 53% of CrowdMag's written reviews are positive against 50% of StraboField's, so the app with the better star average is not the one people write more warmly about.

CrowdMag ships an update every 2 months, StraboField every 2 weeks. The most recent releases landed on September 22, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | CrowdMag | StraboField |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (24 ratings)](https://appshunter.io/ios/app/crowdmag/id910578825/reviews) | **[4.5 (19 ratings)](https://appshunter.io/ios/app/strabofield/id1555903455/reviews)** |
| Number of ratings | **24** | 19 |
| Positive reviews | **52.9% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 18 MB | 87 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [University of Colorado Boulder](https://appshunter.io/developer/972210292) | [The University of Kansas](https://appshunter.io/developer/726307325) |

## What reviewers say

### CrowdMag

[App page](https://appshunter.io/ios/app/crowdmag/id910578825)

This app allows users to measure and contribute to scientific research on Earth's magnetic field using their smartphone. It offers features for recording magnetic data during various activities, including flights, and provides tools for data visualization and analysis.

**Highlights:** Measure magnetic field data, Contribute to scientific research, Record data during flights, Visualize data on maps and graphs, Magnetic calculator with WMM2020, Live magnetic compass, Export data via email/Google Drive

**Features:** macOS Compatibility

**In-app purchases:** none


### StraboField

[App page](https://appshunter.io/ios/app/strabofield/id1555903455)

This mobile application helps geologists record field observations, capture data like photos and sketches, and create geologic maps. It supports various geological subdisciplines and allows for offline use with data syncing capabilities.

**Highlights:** Record field data with photos, sketches, and notes, Collect georeferenced orientation and spatial data, Use custom or built-in basemaps offline, Create multi-scale observations with nested Spots, Organize and back up data locally or to StraboSpot.org, Fully functional offline for remote fieldwork

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

**In-app purchases:** none


## Frequently asked questions

### Is CrowdMag free?

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

### Is StraboField free?

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

### Which has better reviews, CrowdMag or StraboField?

StraboField is rated higher. CrowdMag averages 4.3 out of 5 from 24 ratings, while StraboField averages 4.5 from 19 ratings.

### Do CrowdMag or StraboField have ads?

Neither CrowdMag nor StraboField shows ads.

### Which is updated more often, CrowdMag or StraboField?

CrowdMag ships an update every 2 months, and StraboField every 2 weeks. Most recently, CrowdMag was updated on September 22, 2026 and StraboField 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.*