# CrowdMag vs Compass Maps

The clearest difference is in-app purchases: CrowdMag at none against Compass Maps's 2. Compass Maps's advantage is rating (4.6 vs 4.3) and ratings volume (670 vs 25). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Compass Maps sells 2 in-app purchases, starting at $7.99 per year. CrowdMag asks for nothing beyond the download.

Compass Maps holds the better App Store score, 4.6 against 4.3. That said, the two scores are not equally well evidenced: Compass Maps has 670 ratings behind it against 25, 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 56% of Compass Maps's.

CrowdMag ships an update every 2 months, Compass Maps every 4 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | CrowdMag | Compass Maps |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (25 ratings)](https://appshunter.io/ios/app/crowdmag/id910578825/reviews) | **[4.6 (670 ratings)](https://appshunter.io/ios/app/compass-maps-digital-compass/id6451059416/reviews)** |
| Number of ratings | 25 | **670** |
| Positive reviews | 52.9% of reviews | **55.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 18 MB | 25 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [University of Colorado Boulder](https://appshunter.io/developer/972210292) | [KIET NGUYEN TAN](https://appshunter.io/developer/1696408238) |

## 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


### Compass Maps

[App page](https://appshunter.io/ios/app/compass-maps-digital-compass/id6451059416)

Navigate with a digital compass that displays direction on a map. Features include real-time traffic, land area measurement, and location sharing. It utilizes GPS for auto-direction and allows map interaction.

**Highlights:** Digital compass on map, Real-time traffic maps, Land area measurement, Location sharing, GPS auto-direction, Satellite map mode

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads (Yearly) | $7.99 | per year |
| Remove Ads – Lifetime | $12.99 | one-time |


## Frequently asked questions

### Is CrowdMag free?

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

### Is Compass Maps free?

Compass Maps is free to download, with in-app purchases available.

### Which has better reviews, CrowdMag or Compass Maps?

Compass Maps is rated higher. CrowdMag averages 4.3 out of 5 from 25 ratings, while Compass Maps averages 4.6 from 670 ratings.

### Do CrowdMag or Compass Maps have ads?

Neither CrowdMag nor Compass Maps shows ads.

### Which is updated more often, CrowdMag or Compass Maps?

CrowdMag ships an update every 2 months, and Compass Maps every 4 weeks. Most recently, CrowdMag was updated on November 1, 2026 and Compass Maps on November 3, 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.*