Comparison

GhostScope vs EMF Detector・Ghost Detector

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

Head to head
About

GhostScope

Features
Read full description

GhostScope turns your iPhone into a real ghost hunting kit, powered by the device's actual sensors. EMF METER Your magnetometer measures magnetic field strength in real time. The K-II style LED bar lights up on every spike. Real data, not random numbers. EVP RECORDER Capture Electronic Voice Phenomena and play them back at 0.5x speed, the classic method investigators use to hear hidden voices. SPIRIT RADAR A live sweep reveals nearby entities, biased toward the real magnetic spikes happening around you. PENDULUM Hold your phone steady and ask yes or no questions. The accelerometer reads the tilt and answers Yes, No or Maybe. HUNT LOG Every investigation is saved automatically: location, duration, peak reading and every anomaly event. Track your recurring hotspots. GhostScope Pro unlocks unlimited saved sessions, advanced sensitivity, audio export, custom pendulum questions, home screen widgets and removes ads. For entertainment purposes only. GhostScope does not claim to detect real paranormal phenomena. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://ghapps1.wordpress.com/privacy-policy/

About

EMF Detector・Ghost Detector

Features
Read full description

EMF Detector turns your phone into a real-time magnetic field detector. Point it at wiring, a running appliance or a magnet and watch the reading move — a pocket EMF meter that shows what is actually around you, in microtesla (µT) or milligauss (mG). A MAGNETIC FIELD METER YOU CAN READ AT A GLANCE The main screen is a full instrument panel: a large live number, an analog gauge, the X, Y and Z axes, and a rolling 60-second graph so you see the trend and not just the moment. Peak hold keeps the highest value you passed through, and live Min / Avg / Max show what the room has been doing. Switch between µT and mG whenever you like — the same units a gauss meter or gaussmeter shows — and your choice is remembered. Readings fall into three bands so a number means something. Below 60 µT is Typical, 60–100 µT is Elevated, and 100 µT or more shows as a Strong Field — a sign that something magnetic or powered is close. Turn on the alert and the app sounds and vibrates when the reading crosses your threshold, so you can sweep a wall without staring at the screen. FIND THE SOURCE Move slowly past outlets, cables, speakers, laptops, a running microwave, the breaker panel or a fridge door. Used as an EMF scanner the value climbs as you close in, and peak hold marks the strongest spot you found. The built-in Common Readings table lists typical ranges for more than ten everyday sources and highlights the row your reading falls into — so you can tell the Earth's field from something live inside a wall. GHOST DETECTOR MODE For ghost hunting nights, switch to Ghost Detector: a dark, reactive K-II style display — the K2 meter look ghost hunters know — where the same total magnetic field drives a five-level segment readout and an apparition that grows stronger as the field rises. It is free, it uses no separate sensor and no hidden logic — and it is clearly labelled as entertainment. RECORD AND REVIEW Record a session while you walk a room. The app logs a one-second timeline with duration, Min, Avg, Max and Peak, and keeps it in History so you can reopen it, see the chart, rename or delete it. Export a session as CSV — timestamp, x, y, z, magnitude, unit — to keep or share. WHAT IS IN THE APP • Live magnetic field meter in µT and mG • Analog gauge, large readout and X / Y / Z axes • 60-second chart, peak hold, Min / Avg / Max • Typical / Elevated / Strong Field bands • Threshold alert with sound and haptics • Ghost Detector, a free K-II style reactive mode • Always-on spike rejection so the number does not jitter • Session recording with a 1 Hz timeline and statistics • History list, session chart, rename and delete • CSV export through the system share sheet • Common Readings table with live row highlighting • Guide to EMF, reading levels and calibration • Fully offline — no account, no network, no ads HONEST ABOUT WHAT A PHONE CAN MEASURE Your phone has a magnetometer, the same sensor the compass uses. EMF Detector reads the total magnetic flux density near that sensor and nothing else. It cannot measure radio frequency — no Wi-Fi, no Bluetooth, no 5G, no ionizing radiation — because a phone has no RF sensor. The bands help you locate sources; they are not a health or safety verdict, and this is not a substitute for a calibrated professional EMF meter. Ghost Detector is entertainment and cannot identify anything paranormal. For the steadiest reading, move your phone in a figure-8 to calibrate, take off magnetic cases and mounts, and move slowly. Exporting sessions as CSV requires a subscription (weekly or monthly, each with a 3-day free trial). Everything else here — the meter, the bands, the fixed alert, Ghost Detector, the reference table and your three latest sessions — is free. Terms of Use: https://zeroplay.io/docs/legal/terms-of-service Privacy Policy: https://zeroplay.io/docs/legal/privacy-policy

Screenshots

GhostScope4 screens
EMF Detector・Ghost Detector4 screens

Verdict

The call

The clearest difference is update cadence: EMF Detector・Ghost Detector at every 3 weeks against GhostScope's every 2 months. EMF Detector・Ghost Detector also leads on iOS requirement (15.1 vs 17.4). On price, ads, in-app purchases and device support 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. GhostScope sells 4 in-app purchases, starting at $4.99 per 7 days and EMF Detector・Ghost Detector sells 2 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

GhostScope ships an update every 2 months, EMF Detector・Ghost Detector every 3 weeks. The most recent releases landed on October 1, 2026 and October 11, 2026 respectively.

Scorecard2 real differences · 4 level
GhostScope versus EMF Detector・Ghost Detector: the parameters behind the verdict, then further details
ParameterGhostScopeEMF Detector・Ghost Detector
PriceFreeFree
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsYesYes
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.415.1 — better
Further details — not scored
Size7 MB99 MB
Age rating4+9+
DeveloperGrima HdezZeroPlay Ltd.

In-app purchases

4 purchases

GhostScope

Subscriptions3
  • GhostScope Pro Weekly3 Days trial$4.997 Days
  • GhostScope Pro Monthly3 Days trial$9.991 Month
  • GhostScope Pro Yearly3 Days trial$39.991 Year
One-time1
  • GhostScope Pro Lifetime$49.99
2 purchases

EMF Detector・Ghost Detector

Subscriptions2
  • Weekly3 Days trial$7.997 Days
  • Monthly3 Days trial$19.991 Month

Questions

Is GhostScope free?
GhostScope is free to download, with in-app purchases available.
Is EMF Detector・Ghost Detector free?
EMF Detector・Ghost Detector is free to download, with in-app purchases available.
Do GhostScope or EMF Detector・Ghost Detector have ads?
Both GhostScope and EMF Detector・Ghost Detector show ads.
Which is updated more often, GhostScope or EMF Detector・Ghost Detector?
GhostScope ships an update every 2 months, and EMF Detector・Ghost Detector every 3 weeks. Most recently, GhostScope was updated on October 1, 2026 and EMF Detector・Ghost Detector on October 11, 2026.

Other comparisons