# Ghost Science M3 vs FOUR

The clearest difference is price: FOUR at Free against Ghost Science M3's $10.99. FOUR also leads on iOS requirement (15.5 vs 18.0). Ghost Science M3's advantage is rating (4.6 vs 3.9) and in-app purchases (none vs 1). On update cadence, ads and device support there is nothing between them.

FOUR is free to download; Ghost Science M3 costs $10.99 up front. FOUR sells 1 one-off in-app purchase. Ghost Science M3 asks for nothing beyond the download.

Ghost Science M3 holds the better App Store score, 4.6 against 3.9. That said, the two scores are not equally well evidenced: Ghost Science M3 has 2.7K ratings behind it against 54, so its average is the more settled of the two. Written reviews point the same way: 74% of Ghost Science M3's written reviews are positive against 53% of FOUR's.

Ghost Science M3 ships an update every 5 weeks, FOUR monthly. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Ghost Science M3 | FOUR |
| --- | --- | --- |
| Price | $10.99 | **Free** |
| Rating | **[4.6 (2.7K ratings)](https://appshunter.io/ios/app/ghost-science-m3/id1360656789/reviews)** | [3.9 (54 ratings)](https://appshunter.io/ios/app/four-leaf4-leaf-clover-finder/id6450425954/reviews) |
| Number of ratings | **2.7K** | 54 |
| Positive reviews | **74.4% of reviews** | 53.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | **#5** | — |
| Size | 331 MB | 72 MB |
| Requires iOS | 18.0 | **15.5** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [Michael Weber](https://appshunter.io/developer/349078052) | [Satoshi Ikebukuro](https://appshunter.io/developer/1693240120) |

## What reviewers say

### Ghost Science M3

[App page](https://appshunter.io/ios/app/ghost-science-m3/id1360656789)

**Currently charting:** #5 Top Paid · Entertainment, #66 Top Paid (US App Store)

This advanced paranormal investigation toolkit utilizes cutting-edge technology to detect and visualize potential supernatural activity. Features include infrared laser grid imaging, AI-driven figure detection, real-time audio analysis for spirit communication, and environmental monitoring.

**Highlights:** Infrared laser grid imaging with AI figure detection, Spirit Box with real-time audio analysis, LiDAR-enabled spatial mapping, Environmental monitoring for paranormal phenomena, EMF detection and visualization, EVP and ITC communication tools

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Useful paranormal investigation tools
- 🚀 Comprehensive set of features
- 💡 Innovative technology
- 🔒 Accurate sensor readings

**What reviewers complain about**

- 🐛 Glitches and bugs
- 🔋 Compatibility issues with older devices
- 🤔 Unclear instructions and guidance
- 🤷‍♀️ Questionable reliability of some features

**Reported bugs**

- Lidar feature not working
- EVP recordings not saving
- Frequent app crashes
- Compatibility issues with certain iOS versions

**Requested features**

- Add ability to record and playback EVP sessions
- Improve ghost box functionality
- Provide more detailed information on sensor data
- Allow customization of the dashboard


### FOUR

[App page](https://appshunter.io/ios/app/four-leaf4-leaf-clover-finder/id6450425954)

This app uses AI to help you find four-leaf clovers. It offers a 4K shot mode for wide areas and a real-time mode for closer views. Upgrade to Pro for unlimited access to all features.

**Highlights:** AI-powered clover detection, 4K shot mode for wide areas, Real-time detection mode, Pro mode for unlimited access, Supports iPhone 12 or later

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to Pro mode | $1.99 | one-time |


## Frequently asked questions

### Is Ghost Science M3 free?

Ghost Science M3 costs $10.99, with no in-app purchases.

### Is FOUR free?

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

### Which has better reviews, Ghost Science M3 or FOUR?

Ghost Science M3 is rated higher. Ghost Science M3 averages 4.6 out of 5 from 2.7K ratings, while FOUR averages 3.9 from 54 ratings.

### Do Ghost Science M3 or FOUR have ads?

Neither Ghost Science M3 nor FOUR shows ads.

### Which is updated more often, Ghost Science M3 or FOUR?

Ghost Science M3 ships an update every 5 weeks, and FOUR monthly. Most recently, Ghost Science M3 was updated on October 29, 2026 and FOUR on October 30, 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.*