Comparison

Z SIGHT Tech vs EMF Detector

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

Head to head
About

Z SIGHT Tech

Features
Read full description

Z SIGHT Tech Device Activation App This app is designed for field use by contractors and customers to activate Z SIGHT Tech smart sensors and camera devices installed in containers and dumpsters. Fast and Reliable Setup Easily connect your ZSight Tech hardware to the network and link it to your organization’s account. The app walks you through the activation steps, ensuring each device is ready to transmit data. Purpose-Built for Z SIGHT Tech Hardware This app is not for monitoring or reporting. Monitoring and analytics are available through the Z SIGHT Tech Web Portal. Key Features: Activate ZZ SIGHT Techsensors and cameras Confirm successful device registration Sync devices with your Z SIGHT Tech web account Note: Monitoring, reporting, and analytics are not available in this mobile app. Please log in to the Z SIGHT Tech website for those features.

About

EMF Detector

This app uses your phone's magnetometer to measure and display magnetic field strength. It offers standard and paranormal measurement modes, helps locate sources of EMF, and allows you to record and export your findings.

Highlights
  • Live EMF gauge
  • Standard and paranormal modes
  • Source detection
  • Measurement recording
  • CSV export
  • 24-hour exposure chart
  • Spirit Box feature
Features
Read full description

EMF Detector reads your phone's magnetometer and shows the magnetic field around you in µT or mG: on a live gauge, as separate X, Y and Z axes, and over the last 24 hours. START IN ONE TAP Tap the gauge, or the green START button under it. The app first separates the phone's own magnetism from the field around you. While it says "Calibrating…", turn the phone slowly in a figure-8 for a few seconds; the live reading then appears and stays steadier while you tilt the phone. A short vibration confirms every start and stop. TWO WAYS TO MEASURE • Standard: a radial gauge with plain-language levels from "No EMF detected" upward. In Settings you can switch it to a Safety view that labels a reading as background, weak field, wiring detected or live wire (an estimate from field strength, not proof of a wire) and sets it against ICNIRP reference levels for the general public or for workers. • Paranormal: records a quiet baseline first, then rates each spike against it on a five-step scale and marks it on a session timeline. FIND THE SOURCE The Source tab turns the reading into a warmer / colder hunt. Move the phone slowly around the room; the indicator shows whether the reading is rising or falling, and the X/Y/Z bars show the sensor's value on each axis. KEEP A RECORD • Measurement sessions are saved with their minimum, average and maximum • A 7-day trend with insights, such as how a reading compares with your usual level • Notes and favorites for each reading, plus a side-by-side compare view • CSV export of your history, and share-as-image for the current reading • A 24-hour exposure chart on the main screen • Peak hold, and "Zero here" to re-learn the baseline in a new spot • Calibration offset, µT or mG units, and a choice of reference levels TIPS FOR A GOOD READING 1. Start away from speakers, magnetic cases and car mounts, and do the figure-8 until the number appears. 2. Hold the phone flat and sweep slowly, a few centimetres from the wall or appliance. 3. Watch for a rise against your starting level rather than one absolute number. 4. Tap "Zero here" when you move to a new room so the baseline is re-learned there. FOR GHOST-HUNTING NIGHTS Spirit Box turns the live field into pulses, vibration and spoken words. It is entertainment: field spikes come from wiring, motors, magnets and the phone itself, and no spirits are detected. A Halloween theme can be switched on in Settings. HONEST TECH NOTE A phone magnetometer measures static and slowly changing magnetic fields: steel, magnets, motors, transformers and wiring under load. It samples about ten times a second, so it cannot measure 50/60 Hz mains fields accurately, and it cannot detect radio frequency, Wi-Fi, 5G or radiation. It is not a certified safety instrument; use it to explore and compare readings around your home. Made for curious people comparing readings around appliances and from room to room, and for paranormal investigators.

Screenshots

Z SIGHT Tech4 screens
EMF Detector3 screens

Verdict

The call

The clearest difference is ads: Z SIGHT Tech at none against EMF Detector's shown. On price, in-app purchases, 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference · 8 level
Z SIGHT Tech versus EMF Detector: the parameters behind the verdict, then further details
ParameterZ SIGHT TechEMF Detector
PriceFreeFree
Rating—3.9 (9 ratings) — better
Number of ratings—9 — better
Update frequency—Every 5 days
AdsNo — betterYes
In-app purchasesNoNo
Monetization—Ad-supported
DevicesiPhone, iPad — betteriPhone
Requires iOS16.0 — better16.4
Further details — not scored
Size104 MB79 MB
Age rating4+17+
DeveloperZTERSKyu-Hee Jang

In-app purchases

None

Z SIGHT Tech

No in-app purchases

None

EMF Detector

No in-app purchases

Questions

Is Z SIGHT Tech free?
Z SIGHT Tech is free to download, with no in-app purchases.
Is EMF Detector free?
EMF Detector is free to download, with no in-app purchases.
Do Z SIGHT Tech or EMF Detector have ads?
EMF Detector shows ads; Z SIGHT Tech does not.

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