Comparison

EMF Radiation Detector Reader vs Hidden Camera Detector FindSpy

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

Head to head
About

EMF Radiation Detector Reader

Detect electromagnetic fields (EMF) around you using your phone's sensors. Identify high-radiation zones in your home and workplace to better organize your environment and potentially improve well-being. Measure EMF emitted by various electronic devices and appliances.

Highlights
  • Detect EMF radiation
  • Measure EMF levels
  • Identify risk zones
  • Organize living space
  • Measure appliance emissions
  • No expensive equipment needed
Features
Read full description

> Detect Invisible Fields: Find the ElectroMagnetic Fields around you in seconds > Pro-Grade Precision: High-accuracy Magnetic Field Analyzer & Gauss Meter with Advanced Signal Stabilization. > Record, Analyze & Export: track trends with interactive data charts and save detailed logs for professional analysis. Check out the areas where you work (desk, meeting rooms), where you sleep (bed), where you relax (couch, living room) and find the levels of EMF you are exposed to. Also use the app to measure the fields emitted by your appliances (computer, fridge, speaker, phone...). PROFESSIONAL MAGNETIC FIELD ANALYZER & GAUSS METER: Discover the invisible magnetic world around you. Using your device’s internal magnetometer, the app provides a comprehensive look at the electromagnetic fields (ELF) generated by electronic devices, wiring, and ferromagnetic materials. NEW PROFESSIONAL FEATURES: - 3-Axis Vector Analysis: Real-time $x, y,$ and $z$ coordinate tracking for precise field directionality. - Interactive History Graphs: Visualize time evolution with high-resolution charts that track spikes and trends. - Clean Signal Mode (LPF): Toggle an advanced Low-Pass Filter to stabilize readings and remove sensor jitter for professional-grade clarity - Save & Export Logs: Record your sessions and export data for further analysis in external software. VERSATILE USE CASES: Electronics Inspection: Measure the magnetic footprint of computers, speakers, and home appliances. Metal Detection: Locate ferromagnetic objects like iron pipes or steel studs behind walls. Interference Calibration: Find the "quietest" zones for sensitive electronic equipment or audio setups. USER EXPECTATIONS & DISCLOSURE: This app is designed as a sophisticated utility for detecting Magnetic Fields (ELF). What it detects: Magnetic flux from magnets, ferrous metals, and the low-frequency electromagnetic fields emitted by electronic components, power supplies, and speakers. What it does NOT detect: This app is not a radio frequency (RF) scanner. It cannot detect Wi-Fi signals, Bluetooth, 5G cellular radiation, or microwave leakage. DISCLAIMER: - This app is intended for educational and utility purposes. It is not a substitute for certified industrial or scientific equipment. It does not provide medical advice or guarantee "safe zones" in a clinical sense. This app does not guarantee exact measures as other fields can interfere with the compass inside your phone, which is used to detect the fields. SUBSCRIPTIONS: - Length: weekly, yearly - Your payment will be charged at confirmation of purchase - Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period - Account will be charged for renewal within 24-hours prior to the end of the current period - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase - To Manage or Cancel your subscription, it can be done via the Settings app of your device. For more detail, see https://support.apple.com/en-us/118428 . - To Manage or Cancel your subscription, it can also be done directly from the app: Go to ‘Settings’ screen inside our app, tap on ‘Manage Subscriptions’ and the app will directly open the list of your Subscriptions with the AppStore. You can select a subscription and check available plans or cancel subscription. - When canceling a subscription, your subscription will remain active until the end of the period. Auto-renewal will be disabled but the current subscription will not be refunded. - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable Read our Privacy Policy at: https://roundingsquares.com/privacy/ Read our Terms of Use at: https://roundingsquares.com/terms/

About

Hidden Camera Detector FindSpy

Detect hidden surveillance devices like cameras and listening tools in unfamiliar places. Protect your privacy in hotels, rentals, and public spaces using network, Bluetooth, magnetic field, and infrared scanning.

Highlights
  • Network Scan for cameras
  • Bluetooth Device Detection
  • Magnetic Field Analysis
  • Infrared Scanning
  • Privacy Protection Tool
Features
Read full description

Protect your privacy and stay secure with the Camera Detector app. This app allows you to detect suspicious surveillance devices—such as unauthorized cameras, audio bugs, listening tools, or other covert equipment—in hotels, Airbnbs, vacation rentals, shared spaces, or any place that feels unfamiliar. Ideal for travelers, renters, and anyone who values peace of mind, this tool empowers you to take control of your personal security—anytime, anywhere. NETWORK SCAN: >>> Connect to a Wi-Fi network. >>> Activate Network Scan. >>> Unearth unauthorized cameras through detected network devices. BLUETOOTH DETECTION >>> Enable Bluetooth on your device. >>> Launch the app and enable Bluetooth Detection. >>> Locate nearby suspicious devices using Bluetooth signals. MAGNETIC FIELD ANALYSIS >>> Harness your phone's magnetic sensor. >>> Start Magnetic Field Analysis. >>> Detect unauthorized surveillance tools like microphones, speakers, or cameras based on magnetic fields. INFRARED SCANNING >>> Activate Infrared Scanning. >>> Identify suspicious devices emitting infrared signals, even in low-light environments. Disclaimer: This app is designed to assist users in detecting potentially suspicious surveillance devices using the available sensors on their phones (such as Bluetooth and Wi-Fi scanning). However, it does not guarantee complete accuracy in detection. Users are encouraged to remain vigilant and consider using additional inspection methods. The developer assumes no liability for any damages, losses, or consequences resulting from reliance on the app alone. SUBSCRIPTION PLANS: | Weekly Access | Monthly Access | Yearly Access Information about the auto-renewal of subscription: - Payment will be charged to iTunes Account at confirmation of purchase. - Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. - Account will be charged for renewal within 24 hours prior to the end of the current period, and identify the cost of the renewal. The cost depends on the selected plan. - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. - Any unused portion of the free trial will be forfeited when the user purchases a subscription. Privacy Policy: https://kainsuite.com/privacy-policy/ Terms of Service https://kainsuite.com/terms-conditions/

Screenshots

EMF Radiation Detector Reader3 screens
Hidden Camera Detector FindSpy4 screens

Verdict

The call

The clearest difference is monetization model: EMF Radiation Detector Reader at free with in-app purchases against Hidden Camera Detector FindSpy's subscription. EMF Radiation Detector Reader also leads on review sentiment (54% vs 24%). Hidden Camera Detector FindSpy's advantage is update cadence (every 4 weeks vs every 6 months). On price, rating, ratings volume and ads 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. EMF Radiation Detector Reader sells 2 in-app purchases, starting at $1.99 per 7 days and Hidden Camera Detector FindSpy sells 13 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for EMF Radiation Detector Reader against 4.4 for Hidden Camera Detector FindSpy. Both are backed by a comparable volume of ratings — 5K and 4.1K respectively. Written reviews are what separate them: 54% of EMF Radiation Detector Reader's written reviews are positive against 24% of Hidden Camera Detector FindSpy's.

UpkeepUpdate frequency

EMF Radiation Detector Reader ships an update every 6 months, Hidden Camera Detector FindSpy every 4 weeks. Both last shipped on October 24, 2026.

Scorecard3 real differences · 7 level
EMF Radiation Detector Reader versus Hidden Camera Detector FindSpy: the parameters behind the verdict, then further details
ParameterEMF Radiation Detector ReaderHidden Camera Detector FindSpy
PriceFreeFree
Rating4.5 (5K ratings) — better4.4 (4.1K ratings)
Positive reviews53.5% of reviews — better24.4% of reviews
Number of ratings5K — better4.1K
Update frequencyEvery 6 monthsEvery 4 weeks — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size20 MB184 MB
Age rating4+9+
DeveloperRounding Squares BVKain Suite Pte. Ltd.

Customer experience

EMF Radiation Detector Reader

All ratings4,966 ratings
Positive87.5%
Neutral4.7%
Negative7.8%
Written reviews385 reviews
Positive53.5%
Neutral8.6%
Negative37.9%

Hidden Camera Detector FindSpy

All ratings4,057 ratings
Positive84.9%
Neutral4.5%
Negative10.6%
Written reviews172 reviews
Positive24.4%
Neutral3.5%
Negative72.1%

User reviews

EMF Radiation Detector Reader

From 5K App Store ratings

What we love

  • 👍 Works well around microwave
  • 👍 Consistent results
  • 👍 Useful tool for detecting EMF
  • 👍 Legit EMF detection
  • 👍 Helps find problem areas

Room to improve

  • 🐛 Ads cover reading numbers
  • 🔍 Unclear how to interpret readings
  • ⚠️ Questionable accuracy, only detects magnets
  • 🔍 No explanation of safe/unsafe levels
  • 🐛 Doesn't detect radio frequencies

Hidden Camera Detector FindSpy

From 4.1K App Store ratings

What we love

  • 🚀 Efficient scanning
  • 🔒 Helps detect hidden cameras
  • 👍 Useful for Airbnb guests
  • 👍 Works well enough

Room to improve

  • 🐛 Inconsistent readings
  • 🐛 Doesn't detect known cameras
  • 💰 Expensive subscription
  • 💰 No free trial

Bugs and requests

EMF Radiation Detector Reader

Reported bugs

2 issues
  • Readings inconsistent or inaccurate
  • Doesn't work as expected, only detects magnets

Requested features

3 requests
  • Add sound or vibration alerts for high EMF
  • Provide more information on EMF levels and safety
  • Improve layout to avoid ads covering readings

Hidden Camera Detector FindSpy

Reported bugs

3 issues
  • Stuck on purchase screen
  • Doesn't work as advertised
  • Unreliable detection

Requested features

2 requests
  • Provide more details on detected devices
  • Improve Bluetooth scanning accuracy

In-app purchases

2 purchases

EMF Radiation Detector Reader

Subscriptions2
  • EMF Radiation Detector Premium Week3 Days trial$1.997 Days
  • EMF Radiation Detector Premium Year$9.991 Year
13 purchases

Hidden Camera Detector FindSpy

Subscriptions9
  • Weekly $4.99$4.997 Days
  • Weekly Subscription$5.997 Days
  • Weekly $6.99$6.997 Days
Show 6 more
  • FindSpy Pro Weekly$12.997 Days
  • FindSpy Pro Monthly$12.991 Month
  • Special Sale$14.991 Year
  • FindSpy Pro HalfYear$29.996 Months
  • FindSpy Pro Annual$39.991 Year
  • Yearly Subscription$49.991 Year
One-time4
  • 20 Credits$4.99
  • 50 Credits$9.99
  • 100 Credits$12.99
Show 1 more
  • Lifetime$49.99

Questions

Is EMF Radiation Detector Reader free?
EMF Radiation Detector Reader is free to download, with in-app purchases available.
Is Hidden Camera Detector FindSpy free?
Hidden Camera Detector FindSpy is free to download, with in-app purchases available.
Which has better reviews, EMF Radiation Detector Reader or Hidden Camera Detector FindSpy?
EMF Radiation Detector Reader is rated higher. EMF Radiation Detector Reader averages 4.5 out of 5 from 5K ratings, while Hidden Camera Detector FindSpy averages 4.4 from 4.1K ratings.
Do EMF Radiation Detector Reader or Hidden Camera Detector FindSpy have ads?
Both EMF Radiation Detector Reader and Hidden Camera Detector FindSpy show ads.
Which is updated more often, EMF Radiation Detector Reader or Hidden Camera Detector FindSpy?
EMF Radiation Detector Reader ships an update every 6 months, and Hidden Camera Detector FindSpy every 4 weeks. Most recently, EMF Radiation Detector Reader was updated on October 24, 2026 and Hidden Camera Detector FindSpy on October 24, 2026.

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