Comparison

EMF Detector vs GhostFinder

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

Head to head
About

EMF Detector

This utility app transforms your iPhone's magnetometer into an electromagnetic field scanner. It offers three distinct modes for safety, general readings, and paranormal investigation, with features like measurement history and comparison.

Highlights
  • Magnetometer-based EMF scanning
  • Auto, Safety, and Paranormal modes
  • Measurement history with trend charts
  • Notes and favorites for readings
  • Compare saved readings
  • Calibration offset
  • Share readings as image or CSV
Features
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EMF Detector turns your iPhone's magnetometer into a precise electromagnetic field scanner with three purpose-built modes — and now keeps a full history of every reading you take. THREE MODES • Auto — radial gauge with EMF level descriptions. • Safety — wire detection (background / weak / moderate / live wire) with reference zones based on ICNIRP public reference levels (safe / caution / danger) and household appliance references. • Paranormal — baseline-relative anomaly detection. After 5s of baseline measurement, alerts you with 5-level intensity when EMF spikes deviate from normal — classic ghost-hunting workflow. WHAT'S NEW • Measurement History — every reading is auto-saved with a 7-day trend chart and insights like "+12% vs your 7-day average". • Notes & Favorites — add a note ("bedroom wall outlet") and star to any saved reading. • Compare Mode — pick two saved readings and view the difference side by side. • Calibration Offset — fine-tune your sensor in ±1 µT steps. • Share Result — share your current EMF reading as an image. • CSV Export — share all your measurements as CSV for spreadsheets. REFERENCE LIBRARY • ICNIRP public reference level for 50/60 Hz (100 µT), shown for context • Household appliances: monitor, laptop, electric blanket, fridge, vacuum, induction cooktop, hair dryer • Wiring: background, weak field, wire detected, live wire • Paranormal classes 1–5 CORE FEATURES • Magnetometer-based magnetic field measurement (µT) • Real-time min/max/avg tracking • Radial gauge + chart visualization • Microphone-free, sensor-only HONEST TECH NOTE iPhone magnetometers measure static and low-frequency magnetic fields. They cannot detect microwave / Wi-Fi / 5G RF radiation. The app reports what the sensor actually sees. FOR ELECTRICIANS · HOME SAFETY · GHOST HUNTERS · INVESTIGATORS · CURIOUS MINDS Available in 14 languages.

About

GhostFinder

Features
Read full description

Unleash the Paranormal Investigator Within with GhostFinder! The ultimate AI-powered toolkit for paranormal detection and analysis. Whether you're a seasoned ghost hunter or a curious enthusiast, GhostFinder transforms your mobile device into a sophisticated spectral sensor, offering cutting-edge technology to explore, document, and understand the mysteries of the unseen world. Key Features that Set GhostFinder Apart: Advanced EMF Detection: Our state-of-the-art EMF detector utilizes your device's sensors to identify electromagnetic field fluctuations, a common indicator of paranormal activity. Watch the dynamic needle gauge, interpret real-time frequency readouts, and receive intuitive alerts for baseline, elevated, and anomalous readings. Log your findings automatically to build a comprehensive activity map of your investigation site. EVP Capture & Analysis: Record Electronic Voice Phenomena (EVP) with unparalleled clarity. GhostFinder's integrated EVP recorder captures subtle audio anomalies, while our AI-powered analysis transcribes potential messages and identifies entity signatures. Playback recordings with variable speed, visualize waveforms, and save compelling captures directly to your investigation log. AI-Powered Paranormal Tools: Dive deeper with a suite of intelligent tools designed to enhance your investigations: Spirit Box: Engage in real-time two-way communication simulations with unseen entities. Our AI interprets your questions and synthesizes eerie, context-aware responses. Ghost Speech: Transform raw scan data or entity profiles into decipherable speech, giving a voice to the voiceless. Entity Chat: Simulate direct conversations with detected entities, tracking energy levels and building interactive dialogue. Thermal View Tool: Experience simulated thermal imaging to visualize subtle temperature shifts often associated with spectral presence. Paranormal Oracle: Get AI-driven insights, evidence-based reasoning, and recommended actions based on your gathered data. Seance Analyzer: Assess the suitability and potential risks of a séance environment with AI guidance. Frequency Analyzer: Delve into the intricate patterns of audio frequencies to uncover hidden messages. And Many More: Explore tools like Aura Reader, Dowsing Rod, Poltergeist Detector, Dream Analyzer, Energy Cleansing, Historical Research, and Cryptography to cover every facet of your paranormal quest. Interactive Floor Mapping: Visualize your investigation on an interactive floor map. Pinpoint exact locations of EMF spikes, EVP captures, and other significant findings. Create custom markers, analyze activity hotspots, and build a detailed spatial understanding of your haunted environment. Comprehensive Case Management: Organize all your paranormal endeavors effortlessly: Investigations Log: Create detailed case files for each site, tracking status, location, date, and overall threat levels. Journal Entries: Document every observation, photo, and finding with rich journal entries, linking them directly to your investigations. Report Builder: Generate professional, data-rich reports summarizing your investigations, complete with analysis, evidence, and conclusions. In-depth Analytics & Insights: Gain unprecedented insights into paranormal activity. GhostFinder provides analytics dashboards to visualize trends, track equipment effectiveness, monitor activity patterns over time, and evaluate the success of your methodologies. Understand the statistics behind the supernatural. Designed for the Digital Age, with a Nod to the Arcane: GhostFinder features a dark, atmospheric interface with glowing accents and unique fonts that immerse you in the world of ghost hunting. Optimized for mobile, it’s intuitive, responsive, and always ready for your next encounter. GhostFinder is not just an app; it's your indispensable companion for exploring the paranormal. Download now and start your journey into the spectral realm!

Screenshots

EMF Detector3 screens
GhostFinder4 screens

Verdict

The call

The clearest difference is price: EMF Detector at Free against GhostFinder's $1.99. GhostFinder's advantage is ads (none vs shown) and device support (3 vs 1). On update cadence, in-app purchases 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

EMF Detector is free to download; GhostFinder costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

EMF Detector ships an update every 4 days, GhostFinder every 5 days. The most recent releases landed on September 11, 2026 and September 4, 2026 respectively.

Scorecard3 real differences · 6 level
EMF Detector versus GhostFinder: the parameters behind the verdict, then further details
ParameterEMF DetectorGhostFinder
PriceFree — better$1.99
Rating4.0 (7 ratings) — better—
Number of ratings7 — better—
Update frequencyEvery 4 days — betterEvery 5 days
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.415.5 — better
Further details — not scored
Size60 MB9 MB
Age rating17+17+
DeveloperKyu-Hee JangJames Harrison Burt

In-app purchases

None

EMF Detector

No in-app purchases

None

GhostFinder

No in-app purchases

Questions

Is EMF Detector free?
EMF Detector is free to download, with no in-app purchases.
Is GhostFinder free?
GhostFinder costs $1.99, with no in-app purchases.
Do EMF Detector or GhostFinder have ads?
EMF Detector shows ads; GhostFinder does not.
Which is updated more often, EMF Detector or GhostFinder?
EMF Detector ships an update every 4 days, and GhostFinder every 5 days. Most recently, EMF Detector was updated on September 11, 2026 and GhostFinder on September 4, 2026.

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