# Boffin vs EMF Detector・Ghost Detector

The clearest difference is in-app purchases: Boffin at none against EMF Detector・Ghost Detector's 2. Boffin also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.1). EMF Detector・Ghost Detector's advantage is update cadence (every 3 weeks vs every 5 months). On price and device support there is nothing between them.

Both are free to download. EMF Detector・Ghost Detector sells 2 in-app purchases, starting at $7.99 per 7 days. Boffin asks for nothing beyond the download.

Boffin ships an update every 5 months, EMF Detector・Ghost Detector every 3 weeks. The most recent releases landed on October 1, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Boffin | EMF Detector・Ghost Detector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/emf-detectorghost-detector/id6790258196/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 37 MB | 99 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Michal Valkoun](https://appshunter.io/developer/1672340231) | [ZeroPlay Ltd.](https://appshunter.io/developer/1500119722) |

## What reviewers say

### Boffin

[App page](https://appshunter.io/ios/app/boffin/id6445963502)

**Features:** macOS Compatibility

**In-app purchases:** none


### EMF Detector・Ghost Detector

[App page](https://appshunter.io/ios/app/emf-detectorghost-detector/id6790258196)

This app transforms your phone into a real-time magnetic field detector, displaying readings in microtesla or milligauss. It features a detailed instrument panel, alert functions, and a unique ghost detector mode for entertainment. Record and export your sessions for later review.

**Highlights:** Real-time magnetic field detection, Instrument panel with live readings and graphs, Adjustable threshold alerts, Ghost Detector mode, Session recording and CSV export, Offline functionality

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $7.99 | per 7 days |
| Monthly | $19.99 | per month |


## Frequently asked questions

### Is Boffin free?

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

### Is EMF Detector・Ghost Detector free?

EMF Detector・Ghost Detector is free to download, with in-app purchases available.

### Do Boffin or EMF Detector・Ghost Detector have ads?

EMF Detector・Ghost Detector shows ads; Boffin does not.

### Which is updated more often, Boffin or EMF Detector・Ghost Detector?

Boffin ships an update every 5 months, and EMF Detector・Ghost Detector every 3 weeks. Most recently, Boffin was updated on October 1, 2026 and EMF Detector・Ghost Detector on October 16, 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.*