Comparison

OpenRadiation vs Emf Detector Radiation Reader

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

Head to head
About

OpenRadiation

Measure ambient radioactivity levels and assess your exposure to ionizing radiation using a compatible sensor. Contribute to a citizen science project by sharing your measurements to build a collaborative database.

Highlights
  • Measure radioactivity levels
  • Assess radiation exposure
  • Contribute to citizen science
  • Collaborative data database
  • Share measurements
  • View data online
Features
Read full description

Looking to know the level of radioactivity around you and assess your exposure to ionising radiation? Thanks to this application, and a compatible sensor, you can measure radioactivity. You can also contribute to a citizen science project, by helping to create a collaborative data base of radioactivity measurements in the environment: OpenRadiation (published under an Open Database License). You will then be able to share your measurements using the application and view the data in the application or on the website www.openradiation.org. Create an account on the website www.openradiation.org, and obtain a compatible sensor (see the list of compatible sensors at www.openradiation.org). Activate Bluetooth under your mobile, configure your sensor to measure radioactivity, and publish your measurements. If you do not have a compatible sensor, you can always enter your measurements manually on the website or via the application. OpenRadiation currently brings together the following scientific and academic partners: IFFO-RME - training network in major educational risks -, IRSN - public expert in research and expertise on nuclear and radiological risks -, Planète Sciences – association contributing to the scientific and technical culture of young people - and SORBONNE UNIVERSITE Fablab - digital fabrication and rapid prototyping workshop, open to students, staff and the general public.

About

Emf Detector Radiation Reader

Detect and track magnetic fields and potential EMF sources around you. Receive warnings for high readings and access guidelines for safe exposure levels. Monitor your environment and protect your health.

Highlights
  • Track magnetic fields and high readings
  • Detects ferromagnetic metals
  • Electrosmog (EMP) detector
  • Identifies home appliance EMF sources
  • Radio-Frequency Guidelines table
  • Warning beep for emissions
  • Stores readings with date stamps
Features
Read full description

Track magnetic fields near you. A warning beep will be activated to warn you. The app detects ferromagnetic metals using the iPhone's built-in compass feature. Also works as Electrosmog (EMP) detector. Detect many kinds of home appliances that create radio-frequency EMF. For example:plugs,cell phones,routers, baby monitors, doorbells, intercom systems,night alarm clocks, electronic appliances , electrical wire, antennas. You can check the limit allowed in the "Radio-Frequency Guidelines - for continuous and prolonged exposure" in the instructions button of this app. The higher measures of magnetic fields are stored. Not only does it help you identify potential sources of harmful EMF, but it also provides guidelines on the allowed limit for continuous and prolonged exposure, helping you make informed decisions about your environment. Plus, it stores the higher measures of magnetic fields with a date stamp for each event, allowing you to monitor your exposure over time. Magnetic fields are measured in nT (nanoTesla) and/or milligauss (mG). Customize your screen colors, calculate the magnetic force in nano tesla (nT), and store your records for future reference. Don't leave your health to chance. Take charge of your surroundings and shield yourself and your loved ones from harmful EMF radiation. Take control of your environment and protect yourself and your loved ones from harmful EMF radiation. Health is our most important asset. +++ FEATURES: -Track high magnetic fields and when has it been measured. -Table guide "Radio-Frequency Guidelines - for continuous and prolonged exposure". -Warning beep near focus emissions. -Magnetic force is calculated in nanoteslas ( nT ) -Record your readings with a date stamp of each event. -Store your records. -Change colors of your screen. If you have any issues to report or suggestions to make, please email the device you’re using, iOS version, and a detailed description of the problem to martinbellostudios@gmail.com Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

OpenRadiation4 screens
Emf Detector Radiation Reader3 screens

Verdict

The call

The clearest difference is review sentiment: Emf Detector Radiation Reader at 87% against OpenRadiation's 0%. Emf Detector Radiation Reader also leads on rating (4.6 vs 2.0) and ratings volume (1.3K vs 4). OpenRadiation's advantage is in-app purchases (none vs 5) and ads (none vs shown). On price, device support and iOS requirement 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

Both are free to download. Emf Detector Radiation Reader sells 5 in-app purchases, starting at $4.99 per 7 days. OpenRadiation asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Emf Detector Radiation Reader holds the better App Store score, 4.6 against 2.0. That said, the two scores are not equally well evidenced: Emf Detector Radiation Reader has 1.3K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 0% of OpenRadiation's written reviews are positive against 87% of Emf Detector Radiation Reader's.

UpkeepUpdate frequency

OpenRadiation ships an update every 3 months, Emf Detector Radiation Reader every 3 weeks. The most recent releases landed on October 7, 2026 and October 20, 2026 respectively.

Scorecard7 real differences · 3 level
OpenRadiation versus Emf Detector Radiation Reader: the parameters behind the verdict, then further details
ParameterOpenRadiationEmf Detector Radiation Reader
PriceFreeFree
Rating2.0 (4 ratings)4.6 (1.3K ratings) — better
Positive reviews0.0% of reviews86.7% of reviews — better
Number of ratings41.3K — better
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Apple Watch — better
Requires iOS15.0 — better15.6
Further details — not scored
Size57 MB15 MB
Age rating4+4+
DeveloperASNRBello Studios LLC

Customer experience

OpenRadiation

All ratings4 ratings
Positive0.0%
Neutral50.0%
Negative50.0%
Written reviews2 reviews
Positive0.0%
Neutral50.0%
Negative50.0%

Emf Detector Radiation Reader

All ratings1,315 ratings
Positive92.1%
Neutral3.2%
Negative4.7%
Written reviews435 reviews
Positive86.7%
Neutral4.4%
Negative9.0%

Bugs and requests

OpenRadiation

Not enough reviews yet to summarise bugs or requests.

Emf Detector Radiation Reader

Reported bugs

2 issues
  • Readout digits overlapping on screen
  • Inconsistent behavior of sound indicator

Requested features

4 requests
  • Ability to compare readings over time
  • Option to export/share recorded data
  • More detailed information on safe/unsafe EMF levels
  • Integration with other EMF monitoring devices

In-app purchases

None

OpenRadiation

No in-app purchases

5 purchases

Emf Detector Radiation Reader

Subscriptions2
  • Weekly Premium$4.997 Days
  • 1 Year Premium$12.991 Year
One-time3
  • Enjoy All The Features$0.99
  • Premium Pack - All Features$4.99
  • Lifetime Access$14.99

Questions

Is OpenRadiation free?
OpenRadiation is free to download, with no in-app purchases.
Is Emf Detector Radiation Reader free?
Emf Detector Radiation Reader is free to download, with in-app purchases available.
Which has better reviews, OpenRadiation or Emf Detector Radiation Reader?
Emf Detector Radiation Reader is rated higher. OpenRadiation averages 2.0 out of 5 from 4 ratings, while Emf Detector Radiation Reader averages 4.6 from 1.3K ratings.
Do OpenRadiation or Emf Detector Radiation Reader have ads?
Emf Detector Radiation Reader shows ads; OpenRadiation does not.
Which is updated more often, OpenRadiation or Emf Detector Radiation Reader?
OpenRadiation ships an update every 3 months, and Emf Detector Radiation Reader every 3 weeks. Most recently, OpenRadiation was updated on October 7, 2026 and Emf Detector Radiation Reader on October 20, 2026.

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