# Ghost Science M3 vs SPI

The clearest difference is price: SPI at Free against Ghost Science M3's $10.99. SPI also leads on rating (5.0 vs 4.6). Ghost Science M3's advantage is in-app purchases (none vs 4) and ratings volume (2.7K vs 7). On update cadence, ads, monetization model and device support there is nothing between them.

SPI is free to download; Ghost Science M3 costs $10.99 up front. SPI sells 4 in-app purchases, starting at $4.99 per month. Ghost Science M3 asks for nothing beyond the download.

SPI holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Ghost Science M3 has 2.7K ratings behind it against 7, so its average is the more settled of the two. Written reviews complicate that: 73% of Ghost Science M3's written reviews are positive against 60% of SPI's, so the app with the better star average is not the one people write more warmly about.

Ghost Science M3 ships an update every 5 weeks, SPI every 6 weeks. The most recent releases landed on October 16, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Ghost Science M3 | SPI |
| --- | --- | --- |
| Price | $10.99 | **Free** |
| Rating | [4.6 (2.7K ratings)](https://appshunter.io/ios/app/ghost-science-m3/id1360656789/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/spi/id6736894471/reviews)** |
| Number of ratings | **2.7K** | 7 |
| Positive reviews | **73.5% of reviews** | 59.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 6 weeks |
| Monetization | Free | Free |
| Best chart rank | **#3** | — |
| Size | 331 MB | 70 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 9+ | 17+ |
| Developer | [Michael Weber](https://appshunter.io/developer/349078052) | [Spirit Phone Innovations LLC](https://appshunter.io/developer/1767312130) |

## What reviewers say

### Ghost Science M3

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

**Currently charting:** #3 Top Paid · Entertainment, #99 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


### SPI

[App page](https://appshunter.io/ios/app/spi/id6736894471)

This scientific device is designed for paranormal research and ghost hunting. It combines advanced ITC technology with intuitive frequency features to help users connect with the unknown and explore paranormal activity using AI tools.

**Highlights:** Scientific paranormal device, ITC cutting-edge technology, Intuitive frequency features, Connect with the unknown, EVP Evidence, Artificial intelligence tools

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard Monthly | $4.99 | per month |
| Ghost Monthly | $7.99 | per month |
| Standard Yearly | $49.99 | per year |
| Ghost Yearly | $79.99 | per year |

**What reviewers like**

- 🤍 Accurate, intelligent, and specific responses
- 🤍 Impressive and surreal communication with spirits
- 🤍 Helpful tool for paranormal investigations and research
- 🤍 Game-changing for the paranormal field
- 🤍 Provides relevant and location-specific information

**What reviewers complain about**

- 🐛 Audio/voice issues (no audio playback, crashes, etc.)
- 🐛 Inconsistent performance (works one day, not the next)
- 🐛 Responses seem AI-generated rather than spirit-driven

**Reported bugs**

- Audio/voice not working
- Crashes and freezes
- Inability to save/review recorded interactions

**Requested features**

- Voice playback for responses
- Improved stability and reliability
- Clearer instructions and guidance for users


## Frequently asked questions

### Is Ghost Science M3 free?

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

### Is SPI free?

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

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

SPI is rated higher. Ghost Science M3 averages 4.6 out of 5 from 2.7K ratings, while SPI averages 5.0 from 7 ratings.

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

Neither Ghost Science M3 nor SPI shows ads.

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

Ghost Science M3 ships an update every 5 weeks, and SPI every 6 weeks. Most recently, Ghost Science M3 was updated on October 16, 2026 and SPI on October 11, 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.*