# CrowdMag vs VuSitu

The clearest difference is review sentiment: VuSitu at 100% against CrowdMag's 53%. VuSitu also leads on rating (4.9 vs 4.3). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

VuSitu holds the better App Store score, 4.9 against 4.3. Both are backed by a comparable volume of ratings — 24 and 16 respectively. Written reviews point the same way: 53% of CrowdMag's written reviews are positive against 100% of VuSitu's.

CrowdMag ships an update every 2 months, VuSitu every 6 weeks. The most recent releases landed on September 22, 2026 and August 21, 2026 respectively.

## The numbers

| Metric | CrowdMag | VuSitu |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (24 ratings)](https://appshunter.io/ios/app/crowdmag/id910578825/reviews) | **[4.9 (16 ratings)](https://appshunter.io/ios/app/vusitu/id1448937574/reviews)** |
| Number of ratings | **24** | 16 |
| Positive reviews | 52.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 18 MB | 170 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) | [In-Situ Inc.](https://appshunter.io/developer/592873894) |

## 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


### VuSitu

[App page](https://appshunter.io/ios/app/vusitu/id1448937574)

Easily connect to water monitoring instruments to view, manage, and share water quality and quantity data. Configure, calibrate, and deploy instruments, view live readings, and set up logs. Securely store and share data through a cloud-based account.

**Highlights:** Connect to In-Situ instruments, View live water quality data, Configure and calibrate instruments, Create and manage log files, Secure cloud data storage, Share data via HydroVu, Instant graphing for readings

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

**In-app purchases:** none


## Frequently asked questions

### Is CrowdMag free?

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

### Is VuSitu free?

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

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

VuSitu is rated higher. CrowdMag averages 4.3 out of 5 from 24 ratings, while VuSitu averages 4.9 from 16 ratings.

### Do CrowdMag or VuSitu have ads?

Neither CrowdMag nor VuSitu shows ads.

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

CrowdMag ships an update every 2 months, and VuSitu every 6 weeks. Most recently, CrowdMag was updated on September 22, 2026 and VuSitu on August 21, 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.*