Comparison

BooAlert vs SpiritData

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

Head to head
About

BooAlert

Explore your surroundings using your device's compass to detect magnetic fields. Enhance your experience with night vision and EVP features. Includes a flashlight for dark environments.

Highlights
  • EMF, NVG, & EVP detection
  • NVG mode with screenshot capture
  • EVP recording, playback, and sharing
  • Adjustable EMF sensitivity
  • Built-in flashlight
Features
Read full description

Note: iPods do not have EMF capabilities due to the lack of an internal compass. Use your iPhone, iPad, or iPod Touch to explore the world in a different way. BooAlert utilizes your device's compass to display the magnetic field around you. Get a deeper feel of your findings with a built in NVG and EVP extension. BooAlert also has a built in flashlight for users in dark areas - not available on iPads. Key Features: * EMF, NVG, & EVP * Integration of BooAlert.com * Capturing screenshots in NVG-Mode * EVP recordings, playback, & sharing via email * Adjustable EMF sensitivity * Flashlight on capable devices

About

SpiritData

This app uses AI to detect and visualize potential paranormal activity through body and face tracking, and speech recognition. It presents raw, unfiltered interpretations from publicly accessible software libraries, aiming for unbiased entity detection and communication.

Highlights
  • Persistent SLS-like body detection
  • Face detection
  • EVP speech recognition with on-screen text
  • Unfiltered AI interpretation
  • Open-source web version available
Features
Read full description

EVP Speech Recognition + Unique ‘Persistent’ SLS-like body & face detection. Simple. Clear. Unaltered. A universal straightforward unbiased entity detection and communication platform. Nothing random, nothing pre-programmed. Just raw unfiltered AI interpretation. Stick figures and eyes are drawn over people detected on camera. Words heard on the mic appear written below. Unique features: • Unlike other SLS alternatives, figures persist on-screen for several seconds, so quick appearances remain visible. • Faces are detected as well, not just body positions. • Anything you say is printed as text on-screen, including any EVPs that may be heard answering you. Coded entirely by Two Faces Paranormal, a wife and husband ghost hunting duo, based on what we wanted most for our favorite investigation techniques. Absolutely no part of this code is designed to deceive, display false figures, or unheard text. All displayed output is directly from Apple Speech Recognition or other open publicly-accessible software libraries, entirely unaltered. As AI algorithms can hallucinate, we make no claims that unexpected outputs are inherently paranormal. An open-source web version is available for integrity validation on Github. Pareidolia and confirmation bias are removed from the equation, leaving only equitable unbiased machine learning to detect what the human eye does not see or hear, with cold calculated unequivocal scientific unambiguity. 3 methods for detecting and visualizing spirit activity: • SLS-like body-tracking • Face detection • EVP-interpreting speech recognition text on-screen. Two Faces Paranormal makes no claims as to the presence, validity or origin of any sensor reading. Sensor data interpretation is at the sole discretion of the user. Amusement purposes only. Specifications subject to change without notice. The SpiritData app is provided without any expectation, and to be considered experimental. No claim is made to the validity of the data received by these devices. Suggested use cases do not constitute a claim that any result is guaranteed. No claim is made as to Spirit communications, Aliens, Ghosts or any other type of phenomena. The user agrees not to expose children to this device, or any person who may be harmed or damaged by exposure to this device. You must be over 18 and in sound mental condition to use this device. As the owner of this device you are responsible for the device’s use and responsible for the safety of others who may come in contact with this device. This device should not be used by children under the age of 18 or anyone with a history of mental illness. twofacesparanormal.com

Screenshots

BooAlert3 screens
SpiritData4 screens

Verdict

The call

The clearest difference is review sentiment: SpiritData at 100% against BooAlert's 44%. SpiritData also leads on rating (5.0 vs 3.4) and update cadence (every 6 weeks vs every 31 months). BooAlert's advantage is ads (none vs shown) and iOS requirement (9.0 vs 13.0). On price, ratings volume, in-app purchases and monetization model 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. BooAlert sells 1 one-off in-app purchase and SpiritData sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

SpiritData holds the better App Store score, 5.0 against 3.4. Both are backed by a comparable volume of ratings — 15 and 6 respectively. Written reviews point the same way: 44% of BooAlert's written reviews are positive against 100% of SpiritData's.

UpkeepUpdate frequency

BooAlert ships an update every 31 months, SpiritData every 6 weeks. The most recent releases landed on September 30, 2026 and October 21, 2026 respectively.

Scorecard5 real differences · 5 level
BooAlert versus SpiritData: the parameters behind the verdict, then further details
ParameterBooAlertSpiritData
PriceFreeFree
Rating3.4 (15 ratings)5.0 (6 ratings) — better
Positive reviews43.7% of reviews100.0% of reviews — better
Number of ratings15 — better6
Update frequencyEvery 31 monthsEvery 6 weeks — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better13.0
Further details — not scored
Size85 MB128 MB
Age rating4+4+
Developerbooalert llcJoseph Wozniak

Customer experience

BooAlert

All ratings15 ratings
Positive53.3%
Neutral13.3%
Negative33.3%
Written reviews87 reviews
Positive43.7%
Neutral11.5%
Negative44.8%

SpiritData

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

BooAlert

Reported bugs

20 issues
  • App crashes on opening
  • App closes after a few seconds
  • App freezes
  • App won't stay open
  • App minimizes automatically
Show 15 more
  • App crashes during sessions
  • App has trouble loading
  • EMF doesn't work
  • NVG sends back to home screen
  • Pictures not saved to camera roll
  • Ad removal not working
  • App crashes on iPad Air and iPhone 6
  • App crashes on iPad Mini 4
  • App crashes on iPhone 6
  • App crashes on iOS 9
  • App crashes on iPhone 5S
  • App crashes on iPhone 4g
  • App crashes when opening EVP
  • App crashes when opening functions
  • App crashes when trying to use EVP

Requested features

8 requests
  • Fix crashing issues
  • Add camera to see ghosts
  • Improve app stability
  • Fix bugs
  • Make it more real
Show 3 more
  • Add more features
  • Remove ads
  • Fix saving pictures issue

SpiritData

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

BooAlert

One-time1
  • Ad Removal$1.99
2 purchases

SpiritData

One-time2
  • Promo Code Half Off$4.99
  • Remove Ads from SpiritData$9.99

Questions

Is BooAlert free?
BooAlert is free to download, with in-app purchases available.
Is SpiritData free?
SpiritData is free to download, with in-app purchases available.
Which has better reviews, BooAlert or SpiritData?
SpiritData is rated higher. BooAlert averages 3.4 out of 5 from 15 ratings, while SpiritData averages 5.0 from 6 ratings.
Do BooAlert or SpiritData have ads?
SpiritData shows ads; BooAlert does not.
Which is updated more often, BooAlert or SpiritData?
BooAlert ships an update every 31 months, and SpiritData every 6 weeks. Most recently, BooAlert was updated on September 30, 2026 and SpiritData on October 21, 2026.

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