EMF & Magnetic Detector
By Jose Bello
EMF & Magnetic Detector is a utility app for iOS that uses the device magnetometer to identify magnetic fields and metallic objects.
The App DNA
What makes this app unique?
Users open the app to locate hidden electrical wiring or metal studs during home renovation projects, replacing the need for dedicated, expensive hardware.
For Construction workers, handymen, and students requiring a mobile tool for detecting metallic objects or magnetic fields.
What does it look like?
Key features
Real-time visualization of magnetic field intensity in microteslas and milligauss; drives ad-impression inventory.
Visual mapping of magnetic field variations across a physical space; encourages repeat usage.
Audible alert triggered when magnetic field intensity exceeds a user-defined threshold; increases time-in-app.
How much does it cost?
The app operates as a free utility, monetizing through ad inventory generated by active sensor usage.
Velocity
Maintenance developmentperformanceUX improvementsShow more...
With only one release in the observed window and 174 days since the last update, the app is currently in a maintenance phase. The latest release focused on sensor-processing improvements and a new heatmap visualization feature. There is no evidence of ongoing development or active feature iteration. The development trend is stagnant, with no updates provided for over five months.
Who built it?
Jose Bello
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Electromagnetic EMF Detector
Metal Detector PRO - MedidorUser Sentiment
What do users think recently?
Recent user voice shows a thrilled sentiment. Users appreciate highly accurate magnetic field detection provides utility for home improvement and electrical wiring projects and the intuitive interface and visual heatmap display make complex sensor data accessible for casual users.
How are ratings & reviews evolving?
What users say, by theme
- Highly accurate magnetic field detection provides utility for home improvement and electrical wiring projects
- The intuitive interface and visual heatmap display make complex sensor data accessible for casual users
- Non-disruptive monetization allows users to access core functionality without being forced into frequent ad viewing
- Intermittent sensor failure prevents the app from initializing correctly on some devices post-update
49 of 49 recent reviews analyzed · high confidence · Thrilled overall
Read the full review analysisCompetition
Competitive landscape for EMF & Magnetic Detector
How's the Utilities market?
EMF & Magnetic Detector holds a 4.58 rating across 428 total ratings, indicating strong user satisfaction within the Utilities category. The lack of recent updates over the last 174 days suggests a maintenance-mode posture that leaves the current user base vulnerable to technical regressions.
Read the market outlookThe rivals identified
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Access the full report for freeThe Analyst's Read
Key takeaways for EMF & Magnetic Detector
Where is it heading?
The utility market is consolidating around stable, single-purpose tools, and EMF & Magnetic Detector remains well-positioned due to its high-precision heatmap feature. However, the 174-day update gap leaves the app exposed to technical regressions that could quickly erode its rating baseline if left unaddressed.
- Sensor initialization regressions in the latest update erode the daily active habit, which compounds the rating drag already visible on some devices.
- High user satisfaction with the heatmap visualization suggests the core utility remains highly valued for home renovation projects.
The SWOT
- Intuitive heatmap visualization makes complex sensor data accessible to casual users
- Localized guides for specific construction tasks could increase session frequency among professional users
Next best moves
Rebuild sensor initialization logic because users report failures post-update → restore daily active habit
The counter-intuitive read
The app's maintenance-mode posture is a hidden strength…
Read the full takeSince the last report: The app remains in a maintenance-only state, with the primary shift being a more critical framing of the 174-day update gap and its impact on long-term user retention.
Bottom line
Fixing the sensor initialization regression is the priority, as technical instability directly undermines the utility that drives the app's high retention.
Unlock 1 critical friction, 1 market threat and the analyst’s take.
Access the full report for freeFAQ
Is EMF & Magnetic Detector accurate enough for professional electrical work?
Does the app work without an internet connection?
Is EMF & Magnetic Detector free to use?
Sources
- [1] App Store
Report last updated