# CrowdMag vs Snow Scope App

The clearest difference is rating: Snow Scope App at 5.0 against CrowdMag's 4.3. CrowdMag's advantage is in-app purchases (none vs 2) and ratings volume (24 vs 4). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Snow Scope App sells 2 in-app purchases, starting at $8.99 per month. CrowdMag asks for nothing beyond the download.

Snow Scope App 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 4, so its average is the more settled of the two.

CrowdMag ships an update every 2 months, Snow Scope App monthly. The most recent releases landed on October 9, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | CrowdMag | Snow Scope App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (24 ratings)](https://appshunter.io/ios/app/crowdmag/id910578825/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/snow-scope-app/id1489492572/reviews)** |
| Number of ratings | **24** | 4 |
| Positive reviews | 52.9% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | **Free** | Freemium |
| Size | 18 MB | 98 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [University of Colorado Boulder](https://appshunter.io/developer/972210292) | [Propagation Labs](https://appshunter.io/developer/1489492571) |

## 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


### Snow Scope App

[App page](https://appshunter.io/ios/app/snow-scope-app/id1489492572)

Easily record, view, analyze, and share snowpack data including profiles, test results, and height measurements. Syncs data to the cloud for real-time organization and historical tracking. Supports hands-free recording and integration with specialized probes.

**Highlights:** Record snow profiles, test results, and height measurements, Hands-free recording with voice-to-pit and audio notes, Cloud sync for real-time data sharing and historical database, Web and mobile app access, Filtering, spatial viewing, and analysis tools, Export observations to other platforms, Integrates with Snow Scope Probes for rapid quantification

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Snow Scope Pro Monthly | $8.99 | per month |
| Snow Scope Pro Yearly | $79.99 | per year |


## Frequently asked questions

### Is CrowdMag free?

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

### Is Snow Scope App free?

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

### Which has better reviews, CrowdMag or Snow Scope App?

Snow Scope App is rated higher. CrowdMag averages 4.3 out of 5 from 24 ratings, while Snow Scope App averages 5.0 from 4 ratings.

### Do CrowdMag or Snow Scope App have ads?

Neither CrowdMag nor Snow Scope App shows ads.

### Which is updated more often, CrowdMag or Snow Scope App?

CrowdMag ships an update every 2 months, and Snow Scope App monthly. Most recently, CrowdMag was updated on October 9, 2026 and Snow Scope App on October 6, 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.*