RadioactivityCounter vs EMF Meter Scanner Detector
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RadioactivityCounter
Transform your phone into a functional radioactivity counter. Measure gamma and some beta radiation using your device's camera sensor after calibration. Useful for personal use and experimentation with radiation sources.
- Real radioactivity counter functionality
- Converts phone into Geiger Müller Counter
- Measures gamma and some beta radiation
- Requires calibration for accuracy
- Expert setup for precise measurements
- Supports various iPhone and iPad models
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RadioactivityCounter This application is a real working radioactivity counter without any extra hardware needed ! It will turn your phone into a Geiger Müller Counter to measure radioactivity after proper calibration. ** Attention after upgrading iOS to a higher iOS do the calibrate again, as camera data properties might have changed ** Disclaimer: The type of radiation picked up by the camera can be dangerous/detrimental to the user's health as well as cause damage to the device. Important note: The camera sensor can measure gamma radiation (CS137 for example) and some beta radiation (depends on the energy if the beta rays can pass through the plastic parts - for example H3 or K14 are weak sources). It cannot measure alpha rays (PO210) For AM241 though its primary a Alpha source also some gamma radiation is emitted and might be detectable for a longer measurement. Please check our homepages for examples and hints on how to measure. We did calibrations with several iPod2*, IPhone 3GS*, iPhone 4*, iPhone 4S, iPhone5, iPhone 5S iPhone 6, 6s and iPad 2, iPad 3* devices at the Helmholtz Research Centre, Munich. we used a CS137 test source from 10 µGy/h till 1 Sv/h for each of the phones we had. The values are stored for a rough start on the application (all devices differ a little bit). For precise professional measurement the devices must be adjusted to the sensor which is possible with the expert setup. For personal use the defaults should be sufficient (please give us feedback). * = Attention some phone might not be compatible due the new version of iOS or missing features (gps precision using sim cards)- please try to use an older rev of the App which should be available according to my settings (1.3).
EMF Meter Scanner Detector
Measure electromagnetic field (EMF) levels around you to assess potential environmental risks. This tool helps you identify high-exposure areas and provides data for informed decisions about your surroundings. It offers automatic saving, value averaging, and data sharing capabilities without requiring specialized hardware.
- Measure EMF levels
- Identify risk zones
- Automatic value saving
- Average measurement values
- Share data in CSV format
- Informative EMF content
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Discover the electromagnetic waves around you. Find the levels of EMF you are exposed to. Now you can determine the value of the EMFs to know the risk in your environment. This app has the option to save the values measured automatically. Take the average value of the measurement to know the risk in your environment. You can send and share the values in csv format. Discover a lot of useful information about EMFs. Check out the areas where you sleep or you work and find the levels of EMF you are exposed to. No need to buy expensive equipment. The EMF Meter Detector app on your device will help you detect the EMF risk zones. Organize again your home in order to limit lengthy exposure to high EMF zones. Download now and improve your health!
Screenshots
Verdict
The clearest difference is rating: EMF Meter Scanner Detector at 4.8 against RadioactivityCounter's 3.1. EMF Meter Scanner Detector also leads on update cadence (monthly vs every 15 months) and ratings volume (525 vs 10). RadioactivityCounter's advantage is in-app purchases (none vs 2) and iOS requirement (8.0 vs 12.1). On price, 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
RadioactivityCounter costs $4.99 and EMF Meter Scanner Detector $4.99 up front. EMF Meter Scanner Detector sells 2 one-off in-app purchases. RadioactivityCounter asks for nothing beyond the download.
EMF Meter Scanner Detector holds the better App Store score, 4.8 against 3.1. That said, the two scores are not equally well evidenced: EMF Meter Scanner Detector has 525 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 68% of RadioactivityCounter's written reviews are positive against 87% of EMF Meter Scanner Detector's.
RadioactivityCounter ships an update every 15 months, EMF Meter Scanner Detector monthly. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.
| Parameter | RadioactivityCounter | EMF Meter Scanner Detector |
|---|---|---|
| Price | $4.99 | $4.99 |
| Rating | 3.1 (10 ratings) | 4.8 (525 ratings) — better |
| Positive reviews | 68.4% of reviews | 86.8% of reviews — better |
| Number of ratings | 10 | 525 — better |
| Update frequency | Every 15 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 12.1 |
| Further details — not scored | ||
| Size | 11 MB | 79 MB |
| Age rating | 4+ | 4+ |
| Developer | Dipl.-Ing. Rolf-Dieter Klein | Jorge Gregorio Martin Bello |
Customer experience
RadioactivityCounter
EMF Meter Scanner Detector
Bugs and requests
RadioactivityCounter
Not enough reviews yet to summarise bugs or requests.
EMF Meter Scanner Detector
Reported bugs
2 issues- App crashes on older devices
- Paid version not working as expected
Requested features
3 requests- More detailed EMF data and analysis
- Compatibility with external EMF meters
- Customizable alert thresholds
In-app purchases
RadioactivityCounter
No in-app purchases
EMF Meter Scanner Detector
- Remove ads$0.99
- Unlock all Features$2.99
Questions
Is RadioactivityCounter free?
Is EMF Meter Scanner Detector free?
Which has better reviews, RadioactivityCounter or EMF Meter Scanner Detector?
Do RadioactivityCounter or EMF Meter Scanner Detector have ads?
Which is updated more often, RadioactivityCounter or EMF Meter Scanner Detector?
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