# EMF Detector vs GhostFinder

The clearest difference is price: EMF Detector at Free against GhostFinder's $1.99. GhostFinder's advantage is ads (none vs shown) and device support (3 vs 1). On update cadence, in-app purchases and iOS requirement there is nothing between them.

EMF Detector is free to download; GhostFinder costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

EMF Detector ships an update every 4 days, GhostFinder every 5 days. The most recent releases landed on September 11, 2026 and September 4, 2026 respectively.

## The numbers

| Metric | EMF Detector | GhostFinder |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.0 (7 ratings)](https://appshunter.io/ios/app/emf-detector-emf-meter/id6759903916/reviews)** | — |
| Number of ratings | **7** | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Every 5 days |
| Monetization | Ad-supported | — |
| Size | 60 MB | 9 MB |
| Requires iOS | 16.4 | **15.5** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Kyu-Hee Jang](https://appshunter.io/developer/1587578867) | [James Harrison Burt](https://appshunter.io/developer/1578505380) |

## 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


### GhostFinder

[App page](https://appshunter.io/ios/app/ghostfinder/id6760830973)

**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 GhostFinder free?

GhostFinder costs $1.99, with no in-app purchases.

### Do EMF Detector or GhostFinder have ads?

EMF Detector shows ads; GhostFinder does not.

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

EMF Detector ships an update every 4 days, and GhostFinder every 5 days. Most recently, EMF Detector was updated on September 11, 2026 and GhostFinder on September 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.*