Comparison

Monstrometer vs Spirit Box Detector

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

Head to head
About

Monstrometer

This app helps you identify and understand supernatural beings. It uses biometric scans and questions to assess if someone is a disguised creature like a zombie or vampire, and offers survival tips and videos.

Highlights
  • Biometric finger scan for creature identification
  • Psychometric questions to assess supernatural probability
  • Survival videos for various creatures
  • Tips for dealing with supernatural beings
  • Social game for tricking friends
Features
Read full description

Use The Seth On Survival Monstrometer to scan and interrogate old friends and new acquaintances to determine if they are really supernatural beings in disguise and then learn how to deal with them. You can even scan yourself and link with others who share your supernatural condition. The Monstrometer uses a biometric finger scan and a battery of psychometric questions to determine the probability that your subject could actually be a zombie, vampire, werewolf, leprechaun or other dangerous supernatural creature. Recommended for anyone who has ever wondered, if I ask for her number will she just sink her pretty teeth into my carotid artery and suck out all my blood? And why is my friend acting so weird? The Monstrometer has been updated regularly with new information and results and now you can even watch survival videos with werewolves, zombies and leprechauns right from within the app with even more new videos coming soon. On the SOS website you'll find Monstometer tips to help ensure your survival. (Also some cheats to trick your friends!) Developed by supernatural survivalist Seth Greening, host of web series Seth On Survival and the upcoming Monstrometer Report and the online home of supernatural survival http://www.sethonsurvival.com Knowledge is power. Less power than a functioning particle cannon, true, but still. Don’t be caught unprepared! A fun social game and important survival tool.

About

Spirit Box Detector

This app transforms your phone into a paranormal investigation tool. It features a real-time radar, a camera with ghostly overlays, and a spirit box to capture potential spirit voices. Log your sessions and share your findings.

Highlights
  • Real-time radar sweep
  • Camera with paranormal overlays
  • Spirit box and EVP recorder
  • EMF meter with alerts
  • Sound effects library
  • Session logging
Features
Read full description

Something is in the room with you. Point the camera, watch the radar sweep and listen for what answers back. Ghost turns your phone into a paranormal investigation kit. The radar sweeps the space around you, the camera overlays what it picks up on the live view, and the spirit box cycles frequencies so you can hear the reply. What you get - Radar sweep that maps activity around your position in real time - Live camera view with paranormal overlays for photos and video - Spirit box and EVP recorder to capture and replay voices - EMF style meter with spike alerts and signal history - Sound library of knocks, whispers and footsteps - Session log to compare one haunted room to the next How it works 1. Open the app in the room you want to check 2. Start a sweep and hold the phone steady 3. Watch the meter and raise the camera when it spikes 4. Record, save and share the session with friends Premium unlocks the full sensor set, longer sessions and an ad free hunt. Ghost is entertainment. It is a ghost hunting simulator for haunted house nights and scary pranks on friends, not a scientific instrument. ========= Privacy: https://com-applu-ghostdetector.freeprivacypolicy.app/privacy-policy Terms: https://com-applu-ghostdetector.freeprivacypolicy.app/terms-of-service

Screenshots

Monstrometer4 screens
Spirit Box Detector4 screens

Verdict

The call

The clearest difference is rating: Monstrometer at 4.7 against Spirit Box Detector's 4.1. Monstrometer also leads on in-app purchases (none vs 2) and ads (none vs shown). On price, ratings volume and update cadence 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. Spirit Box Detector sells 2 in-app purchases, starting at $9.99 per 7 days. Monstrometer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Monstrometer holds the better App Store score, 4.7 against 4.1. Both are backed by a comparable volume of ratings — 9 and 8 respectively.

UpkeepUpdate frequency

Monstrometer ships an update every 3 months, Spirit Box Detector every 5 months. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

Scorecard6 real differences · 4 level
Monstrometer versus Spirit Box Detector: the parameters behind the verdict, then further details
ParameterMonstrometerSpirit Box Detector
PriceFreeFree
Rating4.7 (9 ratings) — better4.1 (8 ratings)
Positive reviews71.1% of reviews—
Number of ratings9 — better8
Update frequencyEvery 3 months — betterEvery 5 months
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS9.0 — better17.0
Further details — not scored
Size51 MB15 MB
Age rating4++4
DeveloperT3 Digital ProductionsAPPLU DIGITAL LTDA

Customer experience

Monstrometer

All ratings9 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews76 reviews
Positive71.1%
Neutral14.5%
Negative14.5%

Spirit Box Detector

All ratings8 ratings
Positive75.0%
Neutral0.0%
Negative25.0%

Bugs and requests

Monstrometer

Reported bugs

15 issues
  • Crashes frequently
  • Keeps crashing
  • Crashes every time
  • Force closes
  • Bug that makes the app crash and delete data
Show 10 more
  • Buggy
  • Keeps closing itself
  • Doesn't save stats or monsters
  • Crashes in the middle of the quiz
  • Crashes every 10 seconds
  • Crashes way too many times
  • Can't answer questions due to crashing
  • Keeps crashing on the 5th question
  • Constantly crashing when trying to log in
  • Crashes on me

Requested features

10 requests
  • Update the app on the AppStore
  • Add sound effects
  • Make human a result option
  • Add unicorn and pegasus monsters
  • Show most common answer and past quizzes
Show 5 more
  • List results and near misses
  • Make monster sounds
  • Create more apps
  • Monster database
  • Cool monster pictures for wallpaper

Spirit Box Detector

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Monstrometer

No in-app purchases

2 purchases

Spirit Box Detector

Subscriptions2
  • Weekly Subscription3 Days trial$9.997 Days
  • Annual Subscription$29.991 Year

Questions

Is Monstrometer free?
Monstrometer is free to download, with no in-app purchases.
Is Spirit Box Detector free?
Spirit Box Detector is free to download, with in-app purchases available.
Which has better reviews, Monstrometer or Spirit Box Detector?
Monstrometer is rated higher. Monstrometer averages 4.7 out of 5 from 9 ratings, while Spirit Box Detector averages 4.1 from 8 ratings.
Do Monstrometer or Spirit Box Detector have ads?
Spirit Box Detector shows ads; Monstrometer does not.
Which is updated more often, Monstrometer or Spirit Box Detector?
Monstrometer ships an update every 3 months, and Spirit Box Detector every 5 months. Most recently, Monstrometer was updated on October 24, 2026 and Spirit Box Detector on October 31, 2026.

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