Comparison

Stage Door vs SPI

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

Head to head
About

Stage Door

Features
Read full description

Stage Door by Check In Pointe is the ultimate backstage management app for dance recitals, streamlining the check-in and check-out process with QR code scanning of dancers' backstage pass. Dancers are welcomed backstage with personalized messages, can easily access their individual show schedules and dressing room assignments, and receive a friendly goodbye at checkout. This user-friendly app enhances the recital experience for dancers, parents, and organizers by reducing chaos and improving organization.

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

Screenshots

Stage Door4 screens
SPI4 screens

Verdict

The call

The clearest difference is in-app purchases: Stage Door at none against SPI's 4. SPI's advantage is update cadence (every 5 weeks vs every 3 months). On price, ads, device support and iOS requirement 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. Stage Door asks for nothing beyond the download.

UpkeepUpdate frequency

Stage Door ships an update every 3 months, SPI every 5 weeks. The most recent releases landed on October 25, 2026 and October 27, 2026 respectively.

Scorecard2 real differences · 8 level
Stage Door versus SPI: the parameters behind the verdict, then further details
ParameterStage DoorSPI
PriceFreeFree
Rating—4.3 (9 ratings) — better
Positive reviews—59.2% of reviews
Number of ratings—9 — better
Update frequencyEvery 3 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.417.0 — better
Further details — not scored
Size15 MB70 MB
Age rating4+17+
DeveloperDance Connection of Islip IncSpirit Phone Innovations LLC

Bugs and requests

Stage Door

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

Stage Door

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 Stage Door free?
Stage Door is free to download, with no in-app purchases.
Is SPI free?
SPI is free to download, with in-app purchases available.
Do Stage Door or SPI have ads?
Neither Stage Door nor SPI shows ads.
Which is updated more often, Stage Door or SPI?
Stage Door ships an update every 3 months, and SPI every 5 weeks. Most recently, Stage Door was updated on October 25, 2026 and SPI on October 27, 2026.

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