# CrowdMag vs IMU Utility

The clearest difference is review sentiment: CrowdMag at 53% against IMU Utility's 0%. CrowdMag also leads on rating (4.3 vs 3.0) 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.

CrowdMag holds the better App Store score, 4.3 against 3.0. 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 0% of IMU Utility's.

## The numbers

| Metric | CrowdMag | IMU Utility |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (24 ratings)](https://appshunter.io/ios/app/crowdmag/id910578825/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/imu-utility/id6443543479/reviews) |
| Number of ratings | **24** | 2 |
| Positive reviews | **52.9% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free | Free |
| Size | 18 MB | 10 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [University of Colorado Boulder](https://appshunter.io/developer/972210292) | [Pusik Park](https://appshunter.io/developer/1259054727) |

## 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


### IMU Utility

[App page](https://appshunter.io/ios/app/imu-utility/id6443543479)

This tool displays and transfers measurement data from iPhone's MotionManager and internal IMU sensors. It supports exporting data in CSV, JSON, and Google Protobuf formats, allowing your iPhone to function as an external IMU sensor.

**Highlights:** View MotionManager data, View internal IMU sensor data, Transfer measurement data, Export data as CSV, Export data as JSON, Export data as Google Protobuf

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CrowdMag free?

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

### Is IMU Utility free?

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

### Which has better reviews, CrowdMag or IMU Utility?

CrowdMag is rated higher. CrowdMag averages 4.3 out of 5 from 24 ratings, while IMU Utility averages 3.0 from 2 ratings.

### Do CrowdMag or IMU Utility have ads?

Neither CrowdMag nor IMU Utility shows ads.

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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.*