Comparison

SPI vs Castle Crash 5

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SPI

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
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Spirit Phone Innovations (SPI) — Experimental ITC Research Software Spirit Phone Innovations (SPI) is an experimental paranormal research application developed to explore new approaches to Instrumental Trans-Communication (ITC). Conceptualized by paranormal researcher Sean Austin, SPI is designed to analyze environmental audio using artificial intelligence in a way that differs from traditional ITC-style applications. At the core of SPI is SAM Mode, an experimental feature that analyzes environmental audio in real time and applies AI-based processing to identify and interpret audio patterns that may exist outside of normal human speech ranges. Unlike applications that rely on fixed word banks or pre-selected vocabulary, SPI is designed without predetermined phrase limitations, allowing for open-ended analysis rather than scripted responses. KEY FEATURES SAM Mode Audio Analysis: Experimental AI-driven analysis of environmental audio for potential anomalous patterns. No Word Bank Limitation: Designed without a fixed vocabulary list, allowing results to remain unrestricted by preset phrases. Session Logging & Word History: Detected words and session results are automatically saved to an in-app log folder, allowing users to review, compare, and document findings over time. Language Interpretation (Experimental): Optional translation of detected words when foreign-language patterns are identified. Estimated Voice Characteristics: Experimental analysis providing estimated age range and gender characteristics based on detected audio patterns. Community Activity Mapping & GPS Directions: Users can place location pins to document reported activity, view shared locations from other users, and receive GPS directions to reported sites. SPI was designed with the idea that ITC research benefits from documentation, pattern comparison, and shared exploration. The goal is not to provide predetermined answers, but to create an environment where users can explore potential patterns in audio and compare results across locations, environments, and sessions. SPI is intended for exploration and research. Results are not guaranteed and may vary. Spirit Phone Innovations is an evolving platform committed to continuously expanding and refining its tools as AI technology advances. SUBSCRIPTION INFORMATION SPI requires a subscription to access its features. Two auto-renewable subscription tiers are available — Standard and Ghost — each offered as monthly or yearly plans. Standard includes: EVP detection, frequency range control, and paranormal hotspot reporting. Ghost includes: Everything in Standard, plus age and gender detection and multi-language EVP translation. Payment will be charged to your Apple ID account at confirmation of purchase. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions at any time through your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://spiritphoneinnovations.app/privacy-policy

About

Castle Crash 5

Features
Read full description

Castle Crash 5 is the ultimate offline-first mobile app engineered specifically for resilient, high-stakes FPV drone event management. Operating over a localized Bluetooth Low Energy (BLE) mesh network, it keeps events flying smoothly by securely syncing flight-line queues, schedule updates, and real-time "On Deck" pilot alerts completely independent of cell service or Wi-Fi. Built for both pilots and race directors, the app features smart local notification syncing, an interactive gesture-driven safety onboarding flow, and a pro-grade RF deconfliction tool that runs advanced V-pattern heat algorithms to instantly eliminate signal interference across mixed Analog, HDZero, Walksnail, and DJI video systems. Optimized for the field with a high-performance dark mode, Castle Crash 5 ensures you can fly smart, queue fast, and protect your video link without any reliance on external servers.

Screenshots

SPI4 screens
Castle Crash 53 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
SPI versus Castle Crash 5: the parameters behind the verdict, then further details
ParameterSPICastle Crash 5
PriceFreeFree
Rating4.8 (8 ratings) — better—
Positive reviews59.6% of reviews—
Number of ratings8 — better—
Update frequencyEvery 6 weeksEvery 10 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.1 — better
Further details — not scored
Size70 MB42 MB
Age rating17+4+
DeveloperSpirit Phone Innovations LLCCloudVue LLC

Bugs and requests

SPI

Reported bugs

3 issues
  • Audio/voice not working
  • Crashes and freezes
  • Inability to save/review recorded interactions

Requested features

3 requests
  • Voice playback for responses
  • Improved stability and reliability
  • Clearer instructions and guidance for users

Castle Crash 5

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

SPI

Subscriptions4
  • Standard Monthly$4.991 Month
  • Ghost Monthly$7.991 Month
  • Standard Yearly$49.991 Year
Show 1 more
  • Ghost Yearly$79.991 Year
None

Castle Crash 5

No in-app purchases

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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