# Ghost Detector EMF Scanner vs Harmonograph

The clearest difference is in-app purchases: Harmonograph at none against Ghost Detector EMF Scanner's 10. Ghost Detector EMF Scanner's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Ghost Detector EMF Scanner sells 8 in-app purchases, starting at $2.99 per 7 days. Harmonograph asks for nothing beyond the download.

Ghost Detector EMF Scanner ships an update every 3 weeks, Harmonograph every 10 days. The most recent releases landed on November 5, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Ghost Detector EMF Scanner | Harmonograph |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (14 ratings)](https://appshunter.io/ios/app/ghost-detector-emf-scanner/id6759486220/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Monetization | Free with in-app purchases | — |
| Size | 39 MB | 5 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 9+ | 4+ |
| Developer | [Cloud Motion Lab LLC](https://appshunter.io/developer/1866865109) | [Takashi Nemoto](https://appshunter.io/developer/6790828928) |

## What reviewers say

### Ghost Detector EMF Scanner

[App page](https://appshunter.io/ios/app/ghost-detector-emf-scanner/id6759486220)

This app uses your device's sensors to detect electromagnetic field anomalies, simulating paranormal activity. It features a real-time radar, ghost identification, and a soundboard for an immersive entertainment experience.

**Highlights:** Real-time EMF radar, Ghost identification (names, types, danger levels), Spooky soundboard with sound effects, Haptic vibration feedback, Dark night-vision interface

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro | $2.99 | per 7 days |
| Lifetime Pro - Special Offer | $2.99 | per 7 days |
| Ghost Detector Pro Weekly | $3.99 | per 7 days |
| Yearly Pro | $9.99 | per year |
| Lifetime Pro - Special Offer | $4.99 | one-time |
| Lifetime Pro - Special Offer | $6.99 | one-time |
| Lifetime Pro - Special Offer | $9.99 | one-time |
| Lifetime | $19.99 | one-time |


### Harmonograph

[App page](https://appshunter.io/ios/app/harmonograph-pendulum-art/id6794857269)

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

**In-app purchases:** none


## Frequently asked questions

### Is Ghost Detector EMF Scanner free?

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

### Is Harmonograph free?

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

### Do Ghost Detector EMF Scanner or Harmonograph have ads?

Harmonograph shows ads; Ghost Detector EMF Scanner does not.

### Which is updated more often, Ghost Detector EMF Scanner or Harmonograph?

Ghost Detector EMF Scanner ships an update every 3 weeks, and Harmonograph every 10 days. Most recently, Ghost Detector EMF Scanner was updated on November 5, 2026 and Harmonograph on October 24, 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.*