Comparison

Necro Dice vs SPI

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

Head to head
About

Necro Dice

This app offers a modern take on ancient divination practices using dice. Users can roll lettered dice to receive messages from spirits, with the app interpreting the results into words.

Highlights
  • Simulated lettered dice rolling
  • Spirit communication tool
  • Ancient divination practice
  • Word interpretation algorithm
  • Word log history
Features
Read full description

In the modern age, paranormal investigators use many tools to communicate with spirits. Ouija Boards, Spirit Boxes, radios and apps are just a few of the many tools they use but cultures have been using tools to communicate with spirits for ages. Cleromancy, the practice of contacting divine truth via random castings of dice (or bones) stretches back before recorded history. Astragalomancy, is a form of divination that uses dice marked with letters. In fact, many ancient cultures have various forms of dice divination. Necro Dice is a modern version of this ancient practice. This app means to combine the ancient and modern forms of communication in a completely new and unique way. Users seeking answers or messages can roll the dice with a simple tap of the screen. Once the user’s intention has been cast through the rolling of the dice, it is up to the spirits to communicate by influencing the randomization of letters to form words. This phenomenon of spirit communication through the manipulation of electronic devices has been well documented for several decades. Necro Dice functions by generating a handful of dice with random letters assigned to each of the six faces of each dice. These dice are then simulated with an advanced physics engine that handles dice to table and dice to dice collisions. When the physics simulation completes and the dice settle the result is a jumble of letters shown on the top face of the dice. Normally when using dice, the user is then required to inspect the dice to try and find words in this jumble of letters. This app uses a proprietary algorithm to inspect the top faces of the dice and try to match words and names to a dictionary. A word is chosen from the jumble of letters based on many factors including distance, length, location and relevance. Once a word is detected in the dice, the app will highlight the individual letters on the dice and display the word on the screen. A list of words rolled since the start of the app can be accessed in the word log by pressing the button at the lower left of the screen. Rolling dice isn’t just for games, do the spirits have a message for you?

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
Read full description

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

Screenshots

Necro Dice4 screens
SPI4 screens

Verdict

The call

The clearest difference is review sentiment: SPI at 60% against Necro Dice's 10%. SPI also leads on price (Free vs $9.99) and rating (5.0 vs 2.8). Necro Dice's advantage is in-app purchases (none vs 4) and ratings volume (21 vs 7). On update cadence, ads, monetization model 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

SPI is free to download; Necro Dice costs $9.99 up front. SPI sells 4 in-app purchases, starting at $4.99 per month. Necro Dice asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SPI holds the better App Store score, 5.0 against 2.8. Both are backed by a comparable volume of ratings — 21 and 7 respectively. Written reviews point the same way: 10% of Necro Dice's written reviews are positive against 60% of SPI's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on October 20, 2026 and October 15, 2026 respectively.

Scorecard6 real differences · 4 level
Necro Dice versus SPI: the parameters behind the verdict, then further details
ParameterNecro DiceSPI
Price$9.99Free — better
Rating2.8 (21 ratings)5.0 (7 ratings) — better
Positive reviews10.3% of reviews59.6% of reviews — better
Number of ratings21 — better7
Update frequencyEvery 6 weeksEvery 6 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS11.0 — better17.0
Further details — not scored
Size123 MB70 MB
Age rating12+17+
DeveloperBitPlague LLCSpirit Phone Innovations LLC

Customer experience

Necro Dice

All ratings21 ratings
Positive33.3%
Neutral14.3%
Negative52.4%
Written reviews29 reviews
Positive10.3%
Neutral10.3%
Negative79.3%

SPI

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews151 reviews
Positive59.6%
Neutral2.6%
Negative37.7%

Bugs and requests

Necro Dice

Not enough reviews yet to summarise bugs or 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

In-app purchases

None

Necro Dice

No 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

Questions

Is Necro Dice free?
Necro Dice costs $9.99, with no in-app purchases.
Is SPI free?
SPI is free to download, with in-app purchases available.
Which has better reviews, Necro Dice or SPI?
SPI is rated higher. Necro Dice averages 2.8 out of 5 from 21 ratings, while SPI averages 5.0 from 7 ratings.
Do Necro Dice or SPI have ads?
Neither Necro Dice nor SPI shows ads.
Which is updated more often, Necro Dice or SPI?
Necro Dice ships an update every 6 weeks, and SPI every 6 weeks. Most recently, Necro Dice was updated on October 20, 2026 and SPI on October 15, 2026.

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