# CrowdMag vs SynScan Pro

The clearest difference is rating: CrowdMag at 4.3 against SynScan Pro's 2.6. CrowdMag also leads on monetization model (free vs paid) and review sentiment (53% vs 22%). 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.

CrowdMag holds the better App Store score, 4.3 against 2.6. Both are backed by a comparable volume of ratings — 24 and 51 respectively. Written reviews point the same way: 53% of CrowdMag's written reviews are positive against 22% of SynScan Pro's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 22, 2026 and July 4, 2026 respectively.

## The numbers

| Metric | CrowdMag | SynScan Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (24 ratings)](https://appshunter.io/ios/app/crowdmag/id910578825/reviews)** | [2.6 (51 ratings)](https://appshunter.io/ios/app/synscan-pro/id1302270121/reviews) |
| Number of ratings | 24 | **51** |
| Positive reviews | **52.9% of reviews** | 21.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | **Free** | Paid |
| Size | 18 MB | 46 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [University of Colorado Boulder](https://appshunter.io/developer/972210292) | [Astropower Technology Co. Ltd.](https://appshunter.io/developer/1787940478) |

## 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


### SynScan Pro

[App page](https://appshunter.io/ios/app/synscan-pro/id1302270121)

Control motorized telescope mounts for celestial observation and astrophotography. Features include precise slewing, alignment, GOTO, and tracking of stars, planets, and deep-sky objects. Supports advanced functions like polar alignment and camera triggering.

**Highlights:** Control telescope mount (slew, align, GOTO, track), Point and Track celestial objects, Gamepad navigation support, Catalog of celestial objects, Third-party app integration (ASCOM, SkySafari), Polar alignment (with or without polar scope), Camera shutter release control

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CrowdMag free?

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

### Is SynScan Pro free?

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

### Which has better reviews, CrowdMag or SynScan Pro?

CrowdMag is rated higher. CrowdMag averages 4.3 out of 5 from 24 ratings, while SynScan Pro averages 2.6 from 51 ratings.

### Do CrowdMag or SynScan Pro have ads?

Neither CrowdMag nor SynScan Pro shows ads.

### Which is updated more often, CrowdMag or SynScan Pro?

CrowdMag ships an update every 2 months, and SynScan Pro every 2 months. Most recently, CrowdMag was updated on September 22, 2026 and SynScan Pro on July 4, 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.*