Comparison

Spirit Box vs Necrometer

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

Head to head
About

Spirit Box

This app uses your phone's magnetometer to detect electromagnetic anomalies and translate them into spirit voices and EVP fragments. Explore paranormal encounters with ghost files and customize your investigation with different scanner skins and voice modes. Record and share your findings for entertainment.

Highlights
  • Real magnetometer EMF detection
  • Spirit voice and EVP generation
  • 3 scanner skins
  • 3 voice processing modes
  • 30 Ghost Files with nightly stories
  • Session recording and sharing
  • Offline functionality
Read full description

Real EMF ghost detector powered by your iPhone's magnetometer. Detects electromagnetic anomalies and translates them into spirit voices, whispers, and EVP fragments. No random generators. Real sensor data. Over 5.000+ ghost hunters have used Spirit Box EVP for paranormal investigations, haunted locations, and late-night sleepovers. HOW IT WORKS Point your phone around the room. The magnetometer picks up electromagnetic field fluctuations. When anomalies spike, the scanner responds with voices from beyond. GHOST FILES 30 true paranormal encounters. A new story unlocks every night. Read real investigation reports in a haunted typewriter interface. THREE SCANNER SKINS - Classic: original spirit box with green interface - VHS Tape: dark retro horror scanner with static - Backrooms: liminal space detector with unsettling atmosphere THREE VOICE MODES - Clean: clear spirit communication - Void: deep, distorted voices from the other side - Decay: deteriorated transmissions from the unknown RECORD & SHARE Capture ghost hunting sessions and share your evidence with one tap. FEATURES - Real magnetometer EMF detection - 3 scanner skins - 3 voice processing modes - 30 Ghost Files (new story nightly) - Session recording + sharing - Works completely offline UNLOCK PRO Remove all ads and unlock premium scanner skins. For entertainment purposes only. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://cmlapps.github.io/Spiritbox/privacy.html Terms of Use: https://cmlapps.github.io/Spiritbox/terms.html Privacy Policy: https://cmlapps.github.io/Spiritbox/privacy.html

About

Necrometer

Transform your device into a paranormal investigation tool. This app simulates ghost detection, EMF scanning, and spirit communication using your phone's sensors and real-time signal generation for an immersive experience.

Highlights
  • EMF Scanner & Ghost Detector
  • Spirit Box & ITC Communication
  • EVP Recorder & Audio Scanner
  • Paranormal Investigation Sessions
  • Customization & Atmosphere
Features
Read full description

Necrometer is a powerful Ghost Detector, EMF Scanner, EVP Recorder, and Spirit Box experience designed for paranormal investigation enthusiasts. Turn your device into a cinematic paranormal investigation tool. Using your device’s built-in sensors, immersive audio systems, and real-time signal simulation, Necrometer creates a cinematic ghost hunting experience for exploring paranormal activity, electromagnetic anomalies, and EVP communication sessions. Whether you are investigating haunted locations, testing EMF fluctuations, or experimenting with spirit communication tools, Necrometer delivers an atmospheric paranormal toolkit directly on your device. FEATURES EMF Scanner & Ghost Detector • Real-time EMF scanner with dynamic magnetometer readings • Detect unusual electromagnetic fluctuations and anomalies • Live waveform graph with cinematic visual effects • Ghost detector inspired activity alerts • Session-based paranormal tracking system • Peak EMF statistics and anomaly history Spirit Box & ITC Communication • Advanced Spirit Box inspired communication mode • 60+ paranormal words, phrases, and responses • Real-time ITC text generation system • Glitch animations and atmospheric effects • Spirit strength meter with intensity-based activity • Rare paranormal event triggers during high EMF activity EVP Recorder & Audio Scanner • EVP scanning and paranormal audio simulation • Real-time EVP signal generation experience • Animated audio spectrum visualizer • 3 immersive voice styles: - Whisper - Robotic - Ethereal • Adjustable pitch, echo, distortion, and reverb controls • EVP recording and playback support Paranormal Investigation Sessions • Automatic session recording and storage • Investigation history and anomaly timeline • Save EMF spikes, EVP responses, and spirit messages • Local storage for all paranormal session data Customization & Atmosphere • Adjustable EMF sensitivity settings • Intensity and anomaly frequency controls • Atmospheric particle effects • Haptic feedback and immersive sound design • Battery optimization mode for longer investigations WHY NECROMETER? • Immersive ghost hunting experience • Advanced EMF scanner simulation • Atmospheric Spirit Box interface • Paranormal-inspired EVP communication system • Dark cinematic UI designed for horror and investigation fans • Optimized for immersive late-night paranormal sessions DISCLAIMER Necrometer is intended for entertainment purposes only. This application does not claim to detect, contact, or communicate with real spirits, ghosts, or paranormal entities. All responses, generated signals, and communication simulations are fictional and designed solely for entertainment experiences.

Screenshots

Spirit Box4 screens
Necrometer4 screens

Verdict

The call

The clearest difference is price: Spirit Box at Free against Necrometer's $1.99. Spirit Box also leads on ratings volume (56 vs 4) and rating (4.2 vs 4.0). Necrometer's advantage is in-app purchases (none vs 7) and ads (none vs shown). On review sentiment, update cadence, 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

Spirit Box is free to download; Necrometer costs $1.99 up front. Spirit Box sells 7 in-app purchases, starting at $2.99 per 7 days. Necrometer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Spirit Box holds the better App Store score, 4.2 against 4.0. That said, the two scores are not equally well evidenced: Spirit Box has 56 ratings behind it against 4, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Spirit Box ships an update weekly, Necrometer every 9 days. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

Scorecard6 real differences · 4 level
Spirit Box versus Necrometer: the parameters behind the verdict, then further details
ParameterSpirit BoxNecrometer
PriceFree — better$1.99
Rating4.2 (56 ratings) — better4.0 (4 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings56 — better4
Update frequencyWeekly — betterEvery 9 days
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhoneiPhone, iPod — better
Requires iOS16.015.1 — better
Further details — not scored
Size558 MB43 MB
Age rating9+9+
DeveloperCloud Motion Lab LLCMert Can Oral

Customer experience

Spirit Box

All ratings56 ratings
Positive80.4%
Neutral3.6%
Negative16.1%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Necrometer

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

7 purchases

Spirit Box

Subscriptions5
  • Pro Weekly3 Days trial$2.997 Days
  • Pro Weekly$2.997 Days
  • Pro Weekly$3.997 Days
Show 2 more
  • Pro Weekly$4.997 Days
  • Yearly Pro$19.991 Year
One-time2
  • Lifetime Pro - Offer$4.99
  • Lifetime$29.99
None

Necrometer

No in-app purchases

Questions

Is Spirit Box free?
Spirit Box is free to download, with in-app purchases available.
Is Necrometer free?
Necrometer costs $1.99, with no in-app purchases.
Which has better reviews, Spirit Box or Necrometer?
Spirit Box is rated higher. Spirit Box averages 4.2 out of 5 from 56 ratings, while Necrometer averages 4.0 from 4 ratings.
Do Spirit Box or Necrometer have ads?
Spirit Box shows ads; Necrometer does not.
Which is updated more often, Spirit Box or Necrometer?
Spirit Box ships an update weekly, and Necrometer every 9 days. Most recently, Spirit Box was updated on November 7, 2026 and Necrometer on November 5, 2026.

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