Comparison

EMF Radiation Detector Reader vs Topsoil Calculator Pro

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

Topsoil Calculator Pro

Features
Read full description

Topsoil Calculator Pro is the fastest real-time calculator a topsoil that quickly convert between the imperial and the metric system’s units for Width, Length, Depth, Density, Area, Volume and Weight in real time and without any hassle. Just provide a Width, Length, Depth and you’ll get an Area, Volume and Weight instantaneously. Also you can provide a custom Density of Topsoil. Topsoil Calculator Pro can quickly determine Weight based on Width, Length and Depth. Width and Length can quickly convert expressed in: 1. Meters 2. Centimeters 3. Yards 4. Feet 5. Inches Depth can also quickly convert expressed in: 1. Centimeters 2. Millimeters 3. Meters 4. Feet 5. Inches Weight can also quickly convert expressed in: 1. Kilograms 2. Metric Tons 3. US Short Tons 4. Pounds 5. Stones Density can also quickly convert expressed in: 1. Kg per cubic meter 2. Ton per cubic meter 3. US Ton per cubic yard 4. Pound per cubic feet 5. Pound per cubic yard Area can also quickly convert expressed in: 1. Square Meters 2. Square Centimeters 3. Square Yards 4. Square Feet 5. Square Inches Volume can also quickly convert expressed in: 1. Cubic Meters 2. Cubic Centimeters 3. Cubic Yards 4. Cubic Feet 5. Cubic Inches You can use it if you landscape designer, farmer, builder or another cool man. Calculate and convert topsoil quickly and as you want.

Screenshots

EMF Radiation Detector Reader3 screens
Topsoil Calculator Pro4 screens

Verdict

The call

The clearest difference is price: EMF Radiation Detector Reader at Free against Topsoil Calculator Pro's $1.99. EMF Radiation Detector Reader also leads on update cadence (every 6 months vs every 38 months). Topsoil Calculator Pro's advantage is in-app purchases (none vs 2) and ads (none vs shown). On 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

EMF Radiation Detector Reader is free to download; Topsoil Calculator Pro costs $1.99 up front. EMF Radiation Detector Reader sells 2 in-app purchases, starting at $1.99 per 7 days. Topsoil Calculator Pro asks for nothing beyond the download.

UpkeepUpdate frequency

EMF Radiation Detector Reader ships an update every 6 months, Topsoil Calculator Pro every 38 months. The most recent releases landed on October 27, 2026 and October 3, 2026 respectively.

Scorecard4 real differences · 6 level
EMF Radiation Detector Reader versus Topsoil Calculator Pro: the parameters behind the verdict, then further details
ParameterEMF Radiation Detector ReaderTopsoil Calculator Pro
PriceFree — better$1.99
Rating4.5 (5K ratings) — better—
Positive reviews53.5% of reviews—
Number of ratings5K — better—
Update frequencyEvery 6 months — betterEvery 38 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.614.2 — better
Further details — not scored
Size20 MB0 MB
Age rating4+4+
DeveloperRounding Squares BVAnna Filobok

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

Topsoil Calculator Pro

Not enough reviews yet to summarise bugs or requests.

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
None

Topsoil Calculator Pro

No in-app purchases

Questions

Is EMF Radiation Detector Reader free?
EMF Radiation Detector Reader is free to download, with in-app purchases available.
Is Topsoil Calculator Pro free?
Topsoil Calculator Pro costs $1.99, with no in-app purchases.
Do EMF Radiation Detector Reader or Topsoil Calculator Pro have ads?
EMF Radiation Detector Reader shows ads; Topsoil Calculator Pro does not.
Which is updated more often, EMF Radiation Detector Reader or Topsoil Calculator Pro?
EMF Radiation Detector Reader ships an update every 6 months, and Topsoil Calculator Pro every 38 months. Most recently, EMF Radiation Detector Reader was updated on October 27, 2026 and Topsoil Calculator Pro on October 3, 2026.

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