# EMF Detector vs MotionGuard

The clearest difference is update cadence: MotionGuard at daily against EMF Detector's every 6 days. On price, ads, in-app purchases and device support there is nothing between them.

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

EMF Detector ships an update every 6 days, MotionGuard daily. Both last shipped on October 25, 2026.

## The numbers

| Metric | EMF Detector | MotionGuard |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (9 ratings)](https://appshunter.io/ios/app/emf-detector-emf-meter/id6759903916/reviews)** | — |
| Number of ratings | **9** | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 6 days | **Daily** |
| Monetization | Ad-supported | — |
| Size | 53 MB | 5 MB |
| Requires iOS | 16.4 | **16.0** |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Kyu-Hee Jang](https://appshunter.io/developer/1587578867) | [GOEKHAN BOZKUS](https://appshunter.io/developer/6772191660) |

## What reviewers say

### EMF Detector

[App page](https://appshunter.io/ios/app/emf-detector-emf-meter/id6759903916)

This utility app transforms your iPhone's magnetometer into an electromagnetic field scanner. It offers three distinct modes for safety, general readings, and paranormal investigation, with features like measurement history and comparison.

**Highlights:** Magnetometer-based EMF scanning, Auto, Safety, and Paranormal modes, Measurement history with trend charts, Notes and favorites for readings, Compare saved readings, Calibration offset, Share readings as image or CSV

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

**In-app purchases:** none


### MotionGuard

[App page](https://appshunter.io/ios/app/motionguard/id6798642519)

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

**In-app purchases:** none


## Frequently asked questions

### Is EMF Detector free?

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

### Is MotionGuard free?

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

### Do EMF Detector or MotionGuard have ads?

Both EMF Detector and MotionGuard show ads.

### Which is updated more often, EMF Detector or MotionGuard?

EMF Detector ships an update every 6 days, and MotionGuard daily. Most recently, EMF Detector was updated on October 25, 2026 and MotionGuard on October 25, 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.*