# 霊探知機 vs GhostTrail

The clearest difference is in-app purchases: 霊探知機 at none against GhostTrail's 3. 霊探知機 also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). GhostTrail's advantage is ads (none vs shown) and update cadence (monthly vs every 4 months). On price there is nothing between them.

Both are free to download. GhostTrail sells 3 one-off in-app purchases. 霊探知機 asks for nothing beyond the download.

霊探知機 ships an update every 4 months, GhostTrail monthly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 霊探知機 | GhostTrail |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Monthly** |
| Size | 37 MB | 14 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 9+ |
| Developer | [DIGITAL IMAGING K.K.](https://appshunter.io/developer/1721836089) | [Chih Han Lin](https://appshunter.io/developer/1800248325) |

## What reviewers say

### 霊探知機

[App page](https://appshunter.io/ios/app/id6755385948)

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

**In-app purchases:** none


### GhostTrail

[App page](https://appshunter.io/ios/app/ghosttrail-emf-ghost-hunter/id6771639973)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3 Signals | $0.99 | one-time |
| 12 Signals | $2.99 | one-time |
| 30 Signals | $5.99 | one-time |


## Frequently asked questions

### Is 霊探知機 free?

霊探知機 is free to download, with no in-app purchases.

### Is GhostTrail free?

GhostTrail is free to download, with in-app purchases available.

### Do 霊探知機 or GhostTrail have ads?

霊探知機 shows ads; GhostTrail does not.

### Which is updated more often, 霊探知機 or GhostTrail?

霊探知機 ships an update every 4 months, and GhostTrail monthly. Most recently, 霊探知機 was updated on October 30, 2026 and GhostTrail on October 31, 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.*