# SPI vs PARAVOX ITC SYSTEM 4

The clearest difference is ads: SPI at none against PARAVOX ITC SYSTEM 4's shown. SPI also leads on monetization model (free vs free with in-app purchases) and ratings volume (127 vs 11). PARAVOX ITC SYSTEM 4's advantage is review sentiment (67% vs 58%) and iOS requirement (15.0 vs 17.0). On price, rating, update cadence and in-app purchases there is nothing between them.

Both are free to download. SPI sells 4 in-app purchases, starting at $4.99 per month and PARAVOX ITC SYSTEM 4 sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 3.4 for SPI against 3.3 for PARAVOX ITC SYSTEM 4. That said, the two scores are not equally well evidenced: SPI has 127 ratings behind it against 11, so its average is the more settled of the two. Written reviews are what separate them: 58% of SPI's written reviews are positive against 67% of PARAVOX ITC SYSTEM 4's.

SPI ships an update every 6 weeks, PARAVOX ITC SYSTEM 4 monthly. The most recent releases landed on September 23, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | SPI | PARAVOX ITC SYSTEM 4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (127 ratings)](https://appshunter.io/ios/app/spi/id6736894471/reviews)** | [3.3 (11 ratings)](https://appshunter.io/ios/app/paravox-itc-system-4/id6746058644/reviews) |
| Number of ratings | **127** | 11 |
| Positive reviews | 58.3% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 66 MB | 240 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 9+ |
| Developer | [Spirit Phone Innovations LLC](https://appshunter.io/developer/1767312130) | [EION Development, LLC](https://appshunter.io/developer/1814929457) |

## What reviewers say

### 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


### PARAVOX ITC SYSTEM 4

[App page](https://appshunter.io/ios/app/paravox-itc-system-4/id6746058644)

This application provides a suite of tools for paranormal research and spirit communication. It features modules for detecting spirit messages, generating phonetic responses, asking binary questions, and visualizing potential spirit manifestations. The platform is designed for entertainment purposes and is continuously updated with new features.

**Highlights:** Instrumental Trans-Communication (ITC) module, Real-time EMF phonetic generator (VOX), Binary YES/NO response tool, AI-powered spirit manifestation visualization (SLS), Modular investigative platform, Continuous updates and community feedback integration

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PARAVOX 4 PRO MONTHLY | $3.99 | per month |
| PARAVOX 4 PRO LIFETIME | $14.99 | one-time |


## Frequently asked questions

### Is SPI free?

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

### Is PARAVOX ITC SYSTEM 4 free?

PARAVOX ITC SYSTEM 4 is free to download, with in-app purchases available.

### Which has better reviews, SPI or PARAVOX ITC SYSTEM 4?

SPI is rated higher. SPI averages 3.4 out of 5 from 127 ratings, while PARAVOX ITC SYSTEM 4 averages 3.3 from 11 ratings.

### Do SPI or PARAVOX ITC SYSTEM 4 have ads?

PARAVOX ITC SYSTEM 4 shows ads; SPI does not.

### Which is updated more often, SPI or PARAVOX ITC SYSTEM 4?

SPI ships an update every 6 weeks, and PARAVOX ITC SYSTEM 4 monthly. Most recently, SPI was updated on September 23, 2026 and PARAVOX ITC SYSTEM 4 on September 13, 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.*