geoTools vs EMF Radiation Detector Reader
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
geoTools
This app provides tools for geological, geophysical, engineering, and geographic work. It helps estimate geophysical quantities like Bouguer anomaly and magnetic declination, and offers a quick coordinate converter. It's designed for professionals and enthusiasts interested in Earth Sciences.
- Estimate geophysical quantities
- Calculate Bouguer anomaly
- Estimate magnetic declination
- Quick coordinate converter
- Geographic to UTM conversion
- UTM to geographic conversion
- Uses IGRF geomagnetic model
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geoTools is a set of tools to use in geologic, geophysical, engineering and geographic work. It includes the estimation of important geophysical quantities, such as Bouguer anomaly, topography, magnetic declination, and so on, and a quick coordinate converter. The ideal companion for a geologist, a geophysicist, an engineer, a geographer, and to any person interested in the Earth Sciences. The easiest and more effective way to calculate the parameters associated to the Earth's gravity field and magnetic field. Convert coordinates from geographic to Universal Transverse Mercator and vice-versa with one touch, using different reference systems. Since 2018 the app uses the new IGRF geomagnetic model to estimate the magnetic parameters. All the tests we've made show very good results. PLEASE NOTICE: geoTools is free, no ads, no purchases, absolutely free! If you use it, please let a review to help us keep upgrading the app. It is simple, fast, and very important to us!
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.
- Detect EMF radiation
- Measure EMF levels
- Identify risk zones
- Organize living space
- Measure appliance emissions
- No expensive equipment needed
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> 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/
Screenshots
Verdict
The clearest difference is review sentiment: geoTools at 100% against EMF Radiation Detector Reader's 53%. geoTools also leads on rating (5.0 vs 4.5) and in-app purchases (none vs 2). EMF Radiation Detector Reader's advantage is ratings volume (4.7K vs 3) and update cadence (every 7 months vs every 29 months). On price 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
Both are free to download. EMF Radiation Detector Reader sells 2 in-app purchases, starting at $1.99 per 7 days. geoTools asks for nothing beyond the download.
geoTools holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: EMF Radiation Detector Reader has 4.7K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 100% of geoTools's written reviews are positive against 53% of EMF Radiation Detector Reader's.
geoTools ships an update every 29 months, EMF Radiation Detector Reader every 7 months. The most recent releases landed on September 13, 2026 and September 24, 2026 respectively.
| Parameter | geoTools | EMF Radiation Detector Reader |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | 4.5 (4.7K ratings) |
| Positive reviews | 100.0% of reviews — better | 52.8% of reviews |
| Number of ratings | 3 | 4.7K — better |
| Update frequency | Every 29 months | Every 7 months — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.1 — better | 15.6 |
| Further details — not scored | ||
| Size | 17 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Andre Molina | Rounding Squares BV |
Customer experience
geoTools
EMF Radiation Detector Reader
Bugs and requests
geoTools
Not enough reviews yet to summarise bugs or 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
In-app purchases
geoTools
No in-app purchases
EMF Radiation Detector Reader
- EMF Radiation Detector Premium Week3 Days trial$1.997 Days
- EMF Radiation Detector Premium Year$9.991 Year
Questions
Is geoTools free?
Is EMF Radiation Detector Reader free?
Which has better reviews, geoTools or EMF Radiation Detector Reader?
Do geoTools or EMF Radiation Detector Reader have ads?
Which is updated more often, geoTools or EMF Radiation Detector Reader?
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