Comparison

Electromagnetic Detector PRO vs Lumi

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

Head to head
About

Electromagnetic Detector PRO

Transform your device into an electromagnetic field detector to identify high-risk wireless zones and potential sources of radiation. Receive warnings for strong magnetic fields and record measurements with timestamps. Useful for detecting metallic objects behind walls or underground.

Highlights
  • Detect electromagnetic fields (EMF)
  • Warning beep for high radiation
  • Measure magnetic force on three axes
  • Record readings with timestamps
  • Store up to 100 records
  • Send measures via email
Features
Read full description

Detect the electromagnetic fields near you, known as EMF. It's not necessary an expensive electronic equipment. Your device is already a sensor to detect EMFs. Track when a high magnetic field has been measured while you take the mobile with yourself. A warning beep will be activated to warn you and prevent health problems. Use "Electromagnetic detector" as a scanner or as a EMF detector to detect high risk wireless zones. Check if your bed is EMF free! Appliances, microwaves and sockets could be now radiating you. Convert your iPhone into a EMF Meter (electromagnetic field tester) or as a teslameter. By using the internal compass hardware. You can view the raw data of the magnetic fields that are all around you on a digital display. Over a thousand research studies have linked EMFs to important biological effects. EMFs have been associated with symptoms such as nausea, headache, fatigue, anxiety, mental confusion, memory loss, sleep disturbance, itchy or burning skin sensations, and skin rashes. The electromagnetic radiation come from broken or lose wires behind the wall, or electrical socket, appliances and other electrical devices in the home. Finding pipes or other metallic objects under ground or behind walls. Detecting the presence of ghost. Clocks and radios near the bed may also contribute. Exposures to EMFs from cordless phones, cell phones, wireless computer equipment, Wi-Fi, etc. Scientist, Teachers, Students, Engineers, all use EMF Meter's for detecting magnetic fields of all types. ***Features: -You can track when a high magnetic field has been measured and when, so the current time is stored. -Warning beep near focus radiation. -Detect the strength of Magnetic force fields on all three axis’s (x,y,z). -Magnetic force is calculated in microteslas ( µT ) -Record your readings with a time & date stamp of each event. -Store until 100 records. -Send measures by email. Please observe and respect the iPhone user manual and warranty if you intend to use your iPhone as a scientific device. We are not responsible for any damage that you or any other force of nature may cause to your device. Tips: You may calibrate the detector by moving the iPhone in the form of an 8. Note: This app will not work on an iPod Touch, since it does not have a compass hardware. This app is intended for entertainment purposes only and does not provide true Metal Detector functionality. This apps uses the magnetometer to measure the magnetic field when the iPhone is placed near feromagnetic metal objects. If you would like to have a feature added to this app. Please let us know, so that we can make this happen as soon as possible for you. Download it now to prevent stay near magnetic radiations! (EMF).

About

Lumi

Features
Read full description

FoundYou makes it easy to detect and manage nearby iBeacon devices using your iPhone. Just register your beacon information (UUID, Major, and Minor), and you're ready to go. FoundYou supports all standard iBeacon-compatible devices. Please note that iPhones cannot directly receive beacon advertising data. Beacon detection is performed based on standard iBeacon behavior. By using this app, you agree to our End User License Agreement (EULA). Please read the EULA before using FoundYou.

Screenshots

Electromagnetic Detector PRO3 screens
Lumi3 screens

Verdict

The call

The clearest difference is price: Lumi at Free against Electromagnetic Detector PRO's $4.99. Electromagnetic Detector PRO's advantage is in-app purchases (none vs 1) and update cadence (every 14 months vs every 54 months). On 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

Lumi is free to download; Electromagnetic Detector PRO costs $4.99 up front. Lumi sells 1 one-off in-app purchase. Electromagnetic Detector PRO asks for nothing beyond the download.

UpkeepUpdate frequency

Electromagnetic Detector PRO ships an update every 14 months, Lumi every 54 months. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

Scorecard5 real differences · 5 level
Electromagnetic Detector PRO versus Lumi: the parameters behind the verdict, then further details
ParameterElectromagnetic Detector PROLumi
Price$4.99Free — better
Rating4.3 (12 ratings) — better—
Positive reviews57.1% of reviews—
Number of ratings12 — better—
Update frequencyEvery 14 months — betterEvery 54 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS11.2 — better16.6
Further details — not scored
Size55 MB2 MB
Age rating4+4+
DeveloperJorge Gregorio Martin BelloKazumasa Matsushita

In-app purchases

None

Electromagnetic Detector PRO

No in-app purchases

1 purchases

Lumi

One-time1
  • Support max 10 devices$2.99

Questions

Is Electromagnetic Detector PRO free?
Electromagnetic Detector PRO costs $4.99, with no in-app purchases.
Is Lumi free?
Lumi is free to download, with in-app purchases available.
Do Electromagnetic Detector PRO or Lumi have ads?
Neither Electromagnetic Detector PRO nor Lumi shows ads.
Which is updated more often, Electromagnetic Detector PRO or Lumi?
Electromagnetic Detector PRO ships an update every 14 months, and Lumi every 54 months. Most recently, Electromagnetic Detector PRO was updated on November 2, 2026 and Lumi on November 7, 2026.

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