# SPI vs Castle Crash 5

The clearest difference is in-app purchases: Castle Crash 5 at none against SPI's 4. Castle Crash 5 also leads on update cadence (every 10 days vs every 6 weeks) and iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. SPI sells 4 in-app purchases, starting at $4.99 per month. Castle Crash 5 asks for nothing beyond the download.

SPI ships an update every 6 weeks, Castle Crash 5 every 10 days. The most recent releases landed on October 23, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | SPI | Castle Crash 5 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (8 ratings)](https://appshunter.io/ios/app/spi/id6736894471/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 59.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 10 days** |
| Monetization | Free | — |
| Size | 70 MB | 42 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Spirit Phone Innovations LLC](https://appshunter.io/developer/1767312130) | [CloudVue LLC](https://appshunter.io/developer/1786813186) |

## 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


### Castle Crash 5

[App page](https://appshunter.io/ios/app/castle-crash-5/id6762489355)

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

**In-app purchases:** none


## Frequently asked questions

### Is SPI free?

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

### Is Castle Crash 5 free?

Castle Crash 5 is free to download, with no in-app purchases.

### Do SPI or Castle Crash 5 have ads?

Neither SPI nor Castle Crash 5 shows ads.

### Which is updated more often, SPI or Castle Crash 5?

SPI ships an update every 6 weeks, and Castle Crash 5 every 10 days. Most recently, SPI was updated on October 23, 2026 and Castle Crash 5 on October 17, 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.*