# CrowdMag vs CampbellGo

The clearest difference is review sentiment: CampbellGo at 100% against CrowdMag's 53%. CampbellGo also leads on rating (5.0 vs 4.3). CrowdMag's advantage is update cadence (every 2 months vs every 4 months) and ratings volume (24 vs 2). 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.

CampbellGo holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: CrowdMag has 24 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 53% of CrowdMag's written reviews are positive against 100% of CampbellGo's.

CrowdMag ships an update every 2 months, CampbellGo every 4 months. The most recent releases landed on September 22, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | CrowdMag | CampbellGo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (24 ratings)](https://appshunter.io/ios/app/crowdmag/id910578825/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/campbellgo/id1552419407/reviews)** |
| Number of ratings | **24** | 2 |
| Positive reviews | 52.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free | Free |
| Size | 18 MB | 48 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) | [Campbell Scientific](https://appshunter.io/developer/532185659) |

## 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


### CampbellGo

[App page](https://appshunter.io/ios/app/campbellgo/id1552419407)

This utility app securely pairs mobile devices with CampbellCloud-enabled Edge Devices via NFC/Bluetooth. It ensures seamless field-to-cloud data flow for device deployment, service, and maintenance. Users can also remotely access the most recent data sent to the cloud.

**Highlights:** Secure NFC/Bluetooth pairing, Field-to-Cloud confidence, Device deployment facilitation, Service and maintenance support, Remote data viewing

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CrowdMag free?

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

### Is CampbellGo free?

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

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

CampbellGo is rated higher. CrowdMag averages 4.3 out of 5 from 24 ratings, while CampbellGo averages 5.0 from 2 ratings.

### Do CrowdMag or CampbellGo have ads?

Neither CrowdMag nor CampbellGo shows ads.

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

CrowdMag ships an update every 2 months, and CampbellGo every 4 months. Most recently, CrowdMag was updated on September 22, 2026 and CampbellGo on September 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.*