# 抓鬼神器 vs GhostTrail

The clearest difference is in-app purchases: 抓鬼神器 at none against GhostTrail's 3. 抓鬼神器 also leads on update cadence (fortnightly vs monthly) and device support (3 vs 1). GhostTrail's advantage is ads (none vs shown). On price there is nothing between them.

Both are free to download. GhostTrail sells 3 one-off in-app purchases. 抓鬼神器 asks for nothing beyond the download.

抓鬼神器 ships an update fortnightly, GhostTrail monthly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 抓鬼神器 | GhostTrail |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Monthly |
| Size | 60 MB | 14 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 9+ | 9+ |
| Developer | [Aisen Digital Technology Co., Ltd.](https://appshunter.io/developer/1758022424) | [Chih Han Lin](https://appshunter.io/developer/1800248325) |

## What reviewers say

### 抓鬼神器

[App page](https://appshunter.io/ios/app/id6742887108)

**Features:** macOS Compatibility

**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 抓鬼神器 free?

抓鬼神器 is free to download, with no in-app purchases.

### Is GhostTrail free?

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

### Do 抓鬼神器 or GhostTrail have ads?

抓鬼神器 shows ads; GhostTrail does not.

### Which is updated more often, 抓鬼神器 or GhostTrail?

抓鬼神器 ships an update fortnightly, and GhostTrail monthly. Most recently, 抓鬼神器 was updated on October 24, 2026 and GhostTrail 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.*