# EMF Radiation Detector — user reviews

> 108 indexed App Store user reviews of EMF Radiation Detector by Ngoc Que Nguyen, rated 3.40/5 from 200 ratings.

- Source: https://appshunter.io/ios/app/emf-radiation-detector/id1046907307/reviews
- App overview in markdown: https://appshunter.io/ios/app/emf-radiation-detector/id1046907307.md
- Rating breakdown: 5★ 79 · 4★ 41 · 3★ 21 · 2★ 6 · 1★ 53

## What do users think of EMF Radiation Detector?

Overall sentiment: negative

**Pros**

- 👍 Simple and clean user interface
- 💰 Free app with no ads
- 🧲 Accurately detects magnetic fields
- 🎮 Fun to experiment with as entertainment
- ⚡ Works reliably for magnetic field detection
- 📱 Easy to use for technically challenged users

**Cons**

- ❌ Misleading app description and marketing
- 🚫 Does NOT detect EMF radiation as advertised
- 🚫 Does NOT detect radio frequencies or electric fields
- 🚫 Does NOT detect ionizing radiation (gamma rays, x-rays)
- 🚫 Does NOT detect cell phone radiation
- ⚠️ Only detects magnetic fields, not true EMF
- 📊 Inconsistent and unreliable readings
- 🔄 Readings vary wildly in same location
- 🧲 Triggered by any metal objects, not radiation
- ❓ No explanation of measurement units (microTesla)
- ❓ No safety guidelines or harmful level indicators
- 😕 Confuses users about actual radiation dangers
- 🎭 Functions as a metal detector, not radiation detector

**Commonly reported bugs**

- Inconsistent readings in same location
- App stops detecting after initial use
- Constant high readings on some devices (iPhone 6S)
- Readings change based on phone orientation
- Randomly generates numbers or shows extreme values
- Difficult to uninstall on some devices

**Most requested features**

- Add safety guidelines for harmful radiation levels
- Clarify which EMF frequency ranges are detected
- Provide reference values (e.g., near substation transformer)
- Add ability to change units from microTesla to milligauss
- Include notification alerts for sudden EMF changes
- Add beep/sound option for detections
- Improve accuracy and consistency of readings

## Newest reviews (10 of 108)

### 4/5 — ПРИЛОЖЕНИЕ ИЗМЕРЯЕТ РАДИО ВОЛНЫ

*2026-04-27, version 1.0*

Приложуха измеряет радиоволны от электроприборов 
Поднесите к микроволновке или пасудомойке или в конце концов к магниту (будет показывать несколько тысяч) 
Коректно работает или нет не знаю но побаловаться можно

### 3/5 — !

*2026-04-19, version 1.0*

Поднёс к телефону друга взлетел за 6к что он вообще мерит

### 4/5 — Не то

*2026-02-18, version 1.0*

Короче те кто не понял это приложуха работает на металл железо, никель

### 3/5 — Magnetic Field Detector not Emf detector

*2023-10-24, version 1.0*

Will detect magnetic fields however will not detect Radio Frequencies or Electric Fields.

Ei: wont detect cell phone radiation. But will detect the magnetic field of any magnets.

Simple as that (:

### 4/5 — Radiation

*2023-07-05, version 1.0*

И почему на болоте, где я купаюсь уже как год, радиационный фон повышен? Вроде аварии на ЗАЭС не было

### 3/5 — Крыльцо!!!

*2023-05-22, version 1.0*

У меня крыльцо фонит че делать?

### 4/5 — Uhh is this ok or what?

*2022-10-10*

ok so I have another iPad that’s an iPad Pro and when it got close we got high radiation and idk if that a problem or what so it’s rather I need help or what please tell me what

### 3/5 — Comparing Emf’s

*2022-06-24*

So i have a EMF reader that i just got today,
And i was comparing the app to the real EMF reader it does red on the real emf reader when my laptop is near it and orange going to red on the app if u cant afford an EMF reader then get this app i gave it a 3 out of 5 cause its not totally accurate but it works for a Substitute but otherwise you should get the real thing. 
-Vega

### 3/5 — Ok

*2022-06-18, version 1.0*

Ceci ne remplace pas un appareil conçu pour ce genre de détection mais peut donner une une lecture assez précise . La lecture la plus élever et l’apple Watch sur mon bras + de 2200 ut !

### 4/5 — Apparently doesn’t detect ionizing radiation

*2022-01-03*

This app seems to effectively detect electromagnetic radiation in the range of radio waves and magnetism. When I bring a magnet close to my phone, the detector goes nuts into the high range. Also responds strongly to my automotive “keyless” key, which presumably emits radiation in the RF range.  Responds moderately when placed next to my digital video recorder, which sends RF signals to my wireless earphones. No response over baseline when place next to my wi-fi router. And no response at all when placed next to a hunk of uranium ore.

The developer needs to clarify exactly what EMF frequency ranges this detects. Seems to be more of a magnetism detector, which makes sense, since the units are micro-Teslas, a unit used to measure magnetic fields. This app, however, is definitely worth downloading and experimenting with.

## Most critical reviews (10 lowest-rated)

### 1/5 — Обман

*2023-10-21, version 1.0*

Вранье на телефоне показало 5081 uT 😂😂😂

### 1/5 — A toy not consistent

*2023-05-10, version 1.0*

Near some appliances do not detect incremental values

### 1/5 — Phone don’t have EMF

*2022-12-11, version 1.0*

Your phone does not have a EMF sensor in it so why bother getting this clickbait app

### 1/5 — Another magnet detector

*2022-11-05, version 1.0*

It does not detect electrical current or microwaves.

### 1/5 — Even when the things are unplugged it still detect the emf

*2022-08-23, version 1.0*

👎👎👎

### 1/5 — MISLEADING

*2022-06-24, version 1.0*

I am a amateur radio operator and this looked very suspicious, as the standard way of measuring radio wave field strength is a field strength meter. For ionizing radiation (x-rays, gamma rays) a Geiger counter is used. EMF at the radio and microwave frequencies (30kHz-275GHz) is not harmful in any way, in fact cell phones and computers use radio to communicate, you know this as Wi-Fi. Radio waves pass right through humans with no problems, with very few exceptions. This app uses a magnet for sensing other magnetic fields, a factor a electromagnetic radiation. However, the electromagnetic fields of even a close antenna at high power barely move the counter, radio fields that are strong come in at a voltage of about 0.000050 Volts, with your phone charger using 12 volts. To conclude, radio waves do NOT have any adverse health affects, this app does NOT measure properly electromagnetic radiation ionizing or non-ionizing, rather it is a toy using magnetic fields.

### 1/5 — i dont know if that app real mesurement?

*2022-06-16, version 1.0*

hi some times that app give 410 and orher times give me between 35 and 45 is this real mesurement or just a joke?

### 1/5 — Just get a real Geiger counter

*2022-01-20, version 1.0*

Apparently my art workshop is more dangerous than Chernobyl according to this app.

### 1/5 — Waste of time

*2022-01-07, version 1.0*

It’s metal, anything metal at all will make it go up. I was searching around and got to a draw, it went up so I opened it and it went up more. Got suspicious so took a metal spoon out put it near my phone it went up, moved it away went back down. Don’t bother wasting your time its a bunch of crap!

### 1/5 — Garbage

*2021-12-05, version 1.0*

Doesnt work at all, gave a reading the first few times then 0 and never changes. Get this crap off app store please.

## Most praised reviews (10 highest-rated)

### 5/5 — Он как металлоискатель

*2026-02-18, version 1.0*

Он у меня возле метала горит

### 5/5 — Эл-маг мерить, радиация не мерить!

*2026-02-12, version 1.0*

А если долго, на питерских болотах, да еще и в сезон ,, там можно и Варп-излучение замерить,, да и не только😊🤭😂🤣

### 5/5 — 🤣🤣🤣🤣🤣🤣

*2025-12-23, version 1.0*

Друг пукнул и взлетело до 500

### 5/5 — ЧАЙ

*2025-12-02, version 1.0*

ААА ЧЕ ДЕЛАТЬ 3 МЕНЯ ЧАЙ 1256 Цт АААА

### 5/5 — 대단한 앱이네요!

*2023-08-03, version 1.0*

이앱으로 숲에가서 삼성 핸드폰 찾았습니다!

### 5/5 — Fire alarm Castilel?.??

*2023-06-17, version 1.0*

??? my face of radiation I guess

### 5/5 — заставляет задуматься

*2023-02-20, version 1.0*

почему морская свинка фонит 😰

### 5/5 — This is accurate

*2022-12-26*

Wait this matched up with the radiation detector that I bought NICE!

### 5/5 — Great

*2022-12-02, version 1.0*

Some of the other reviewers are getting confused over EM fields vs radioactive decay and radiation which is different. Description doesn’t help as wrong terminology used.
I know this works but using the flux valve (compass) in the iphone.
I’ve been using this in my electromagnetism experiment it’s really great for me.
The only thing it could benefit from is some way to help interpret the values (Apparently in MicroTesla) versus something like, standing next to a substation transformer?
Really cool, thanks for making it!

### 5/5 — Hmm

*2022-07-13, version 1.0*

My counter is radioactive near high is that normal

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-09.*