---
title: "CrowdMag — App Overview"
url: https://marlvel.ai/intel-report/utilities/crowdmag
category: Utilities
developer: University of Colorado Boulder
platforms: ios, android
rating: 4.3 (497 ratings)
pricing: free
report_level: overview
generated: 2026-04-27
last_verified: "2026-04-27T09:41:12.987Z"
---

<!-- SECTION: Key Insight -->
> **Key Insight:** While the app provides unique scientific data collection capabilities, users frequently report technical issues regarding GPS location acquisition and background recording functionality.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Utilities |
| Rating | 4.3 ★ (497) |
| Pricing | free |
| Platforms | iOS, Android |
| Latest Version (iOS) | 2.2.7 |
| Latest Version (Android) | 2.2.6 |
| Developer | University of Colorado Boulder |

<!-- SECTION: Summary -->
## What is CrowdMag?

CrowdMag is a citizen science tool developed by the University of Colorado Boulder that utilizes smartphone sensors to measure local magnetic field components. Users can record data during outdoor activities or flights to contribute to NOAA’s research on Earth's magnetic field.

<!-- SECTION: Key Features -->
## Key Features

- **Magnetic Field Measurement**: Captures Z, H, and F magnetic field components in nanotesla units for visualization as maps or graphs.
- **Flight Mode**: Allows users to contribute to scientific research by measuring magnetic fields during air travel based on provided itineraries.
- **Data Contribution**: Enables users to share collected magnetic data with NOAA to assist in scientific understanding of Earth's magnetic field.

<!-- SECTION: Target Audience -->
## Who is it for?

Citizen scientists, researchers, and outdoor enthusiasts interested in geomagnetic data collection.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/crowdmag/id910578825?uo=4)
- [Google Play](https://play.google.com/store/apps/details?id=gov.noaa.ngdc.wmm2&hl=en&gl=us)
- [Full Intelligence Report](https://marlvel.ai/intel-report/utilities/crowdmag)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/intel-report/utilities/crowdmag).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*