# CrowdMag vs SoulTuner

The clearest difference is price: CrowdMag at Free against SoulTuner's $0.99. CrowdMag also leads on iOS requirement (15.0 vs 18.6). SoulTuner's advantage is update cadence (every 5 days vs every 2 months). On ads, in-app purchases and device support there is nothing between them.

CrowdMag is free to download; SoulTuner costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

CrowdMag ships an update every 2 months, SoulTuner every 5 days. Both last shipped on November 1, 2026.

## The numbers

| Metric | CrowdMag | SoulTuner |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.3 (25 ratings)](https://appshunter.io/ios/app/crowdmag/id910578825/reviews)** | — |
| Number of ratings | **25** | — |
| Positive reviews | 52.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 18 MB | 3 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [University of Colorado Boulder](https://appshunter.io/developer/972210292) | [Techné Media](https://appshunter.io/developer/486076968) |

## 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


### SoulTuner

[App page](https://appshunter.io/ios/app/soultuner/id6820549671)

**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 SoulTuner free?

SoulTuner costs $0.99, with no in-app purchases.

### Do CrowdMag or SoulTuner have ads?

Neither CrowdMag nor SoulTuner shows ads.

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

CrowdMag ships an update every 2 months, and SoulTuner every 5 days. Most recently, CrowdMag was updated on November 1, 2026 and SoulTuner on November 1, 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.*