Fluxmeter vs Magnetic Field Scanner
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fluxmeter
This utility app detects invisible electromagnetic fields using your device's magnetometer. It scans for alternating current waves from power lines and unshielded devices, employing a unique algorithm to isolate local magnetic flux.
- Detects electromagnetic fields
- Uses device magnetometer
- Scans for 50/60hz AC waves
- Measures local magnetic flux
- Proprietary zeroing algorithm
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Measure the invisible electromagnetic fields that surround us. This utility uses your device's built in magnetometer to scan for 50/60hz alternating current waves, emanating from power lines and unshielded devices that use alternating current, such as desk fans, space heaters, or toasters. Fluxmeter uses a proprietary algorithm to "zero" out the Earth's magnetic field, allowing measurement of the local area magnetic flux only.
Magnetic Field Scanner
This utility app uses your phone's magnetometer to detect unusual magnetic field spikes, which may indicate the presence of hidden electronic devices. It provides real-time alerts, visual graphs, and customizable sensitivity to help you scan your surroundings for potential privacy threats.
- Real-time magnetic field scanning
- Hidden device alerts with adjustable sensitivity
- Live visual graph of magnetic signals
- 3-axis sensor readouts
- Data history for pattern spotting
- Offline and private operation
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Worried someone might be spying on you? Instantly scan for hidden cameras, GPS trackers, and spy bugs using your phone. Spy Detector: EMF Scanner helps you protect your privacy with real-time magnetic field detection and instant alerts. HOW IT WORKS Your phone already has a magnetometer sensor built in — the same one used by compasses. Spy Detector transforms that sensor into a powerful EMF scanner, letting you identify unusual magnetic activity around you. Such magnetic spikes may occur near hidden electronic devices, metal objects, or power sources. FEATURES - Smart EMF scanner: Uses your device’s magnetometer to measure real-time magnetic field strength in microteslas (µT). - Hidden device alerts: Set sensitivity levels and get instant audio or vibration alerts when magnetic readings suddenly spike. - Live visual graph: Watch real-time waveforms of detected signals as you move your phone around. - Customizable sensitivity: Adjust thresholds for different environments (home, car, office, hotel). - 3-axis readouts: View detailed X, Y, Z sensor values for precise analysis. - Data history: Quickly review recent magnetic field changes to spot patterns. - Clean, discreet interface: Dark “matrix-style” visuals that look sleek and reduce glare in low light. - Offline & private: No internet, no tracking. All processing happens locally on your device. HOW TO USE 1. Open the app, tap on "SCAN" to start scanning. 2. Move your phone slowly around suspicious areas (mirrors, walls, smoke detectors, switches). 3. Watch for magnetic spikes on the live graph or listen for alerts. 4. Adjust sensitivity if needed to reduce false signals. 5. Use vibration mode for silent, discreet scanning. PERFECT FOR - Travelers checking hotel rooms or rentals - Anyone concerned about hidden recording devices - Security-minded professionals or journalists - Students and hobbyists exploring EMF fields - Everyday users who value privacy and peace of mind Protect your privacy today. Download Spy Detector: EMF Scanner and take control of your personal space. IMPORTANT NOTE Spy Detector: EMF Scanner uses your device’s built-in magnetometer to detect changes in magnetic fields. While strong spikes may indicate nearby electronic components, magnets, or metal structures, the app cannot guarantee detection of hidden cameras or GPS trackers in every case. Use it as a first-line privacy tool and combine it with visual inspection for best results. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Fluxmeter at none against Magnetic Field Scanner's 3. Fluxmeter also leads on update cadence (fortnightly vs every 2 months) and rating (4.5 vs 4.3). On price, ratings volume, ads 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. Magnetic Field Scanner sells 3 in-app purchases, starting at $5.99 per month. Fluxmeter asks for nothing beyond the download.
Fluxmeter holds the better App Store score, 4.5 against 4.3. Both are backed by a comparable volume of ratings — 8 and 12 respectively.
Fluxmeter ships an update fortnightly, Magnetic Field Scanner every 2 months. The most recent releases landed on October 12, 2026 and October 24, 2026 respectively.
| Parameter | Fluxmeter | Magnetic Field Scanner |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (8 ratings) — better | 4.3 (12 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 8 | 12 — better |
| Update frequency | Fortnightly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 7 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Engineering Director, Inc. | Hoang Le |
Customer experience
Fluxmeter
Magnetic Field Scanner
In-app purchases
Fluxmeter
No in-app purchases
Magnetic Field Scanner
- MagnetoScanner Month Pass$5.991 Month
- MagnetoScanner Year PAss$29.991 Year
- MagnetoScanner Lifetime Access$39.99
Questions
Is Fluxmeter free?
Is Magnetic Field Scanner free?
Which has better reviews, Fluxmeter or Magnetic Field Scanner?
Do Fluxmeter or Magnetic Field Scanner have ads?
Which is updated more often, Fluxmeter or Magnetic Field Scanner?
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