Comparison

RadioactivityCounter vs RadMobile

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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).

About

RadMobile

Features
Read full description

RadMobile app displays real-time radiation measurement information from gamma-ray and neutron detectors of directly connected RSI devices through Wi-Fi network, notifies immediately upon anomalous radiation activity and high radiation level detected providing the ability to user to send email reports with attached measurement data formatted according to IEEE N42 standard. FEATURES: - Wireless connection to RSI device - Continuous radiation level monitoring - Fast notifying upon radiation detected providing Nuclide ID and dose rate - Gamma and neutron count rate display, dose rate display - Uninterrupted operation for immediate response on detected radiation - Graph indicating detected radiation level in a range of received measurement samples - Map view with current RSI device location - Alarm sound upon radiation detected - RSI Device information and status screen

Screenshots

RadioactivityCounter2 screens
RadMobile4 screens

Verdict

The call

The clearest difference is price: RadMobile at Free against RadioactivityCounter's $4.99. RadMobile also leads on update cadence (every 2 months vs every 15 months). RadioactivityCounter's advantage is iOS requirement (8.0 vs 13.0). On ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

RadMobile is free to download; RadioactivityCounter costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

RadioactivityCounter ships an update every 15 months, RadMobile every 2 months. The most recent releases landed on October 30, 2026 and October 29, 2026 respectively.

Scorecard3 real differences · 7 level
RadioactivityCounter versus RadMobile: the parameters behind the verdict, then further details
ParameterRadioactivityCounterRadMobile
Price$4.99Free — better
Rating3.1 (10 ratings) — better—
Positive reviews68.4% of reviews—
Number of ratings10 — better—
Update frequencyEvery 15 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPodiPhone, iPod
Requires iOS8.0 — better13.0
Further details — not scored
Size11 MB6 MB
Age rating4+4+
DeveloperDipl.-Ing. Rolf-Dieter KleinRadiation Solutions Inc

In-app purchases

None

RadioactivityCounter

No in-app purchases

None

RadMobile

No in-app purchases

Questions

Is RadioactivityCounter free?
RadioactivityCounter costs $4.99, with no in-app purchases.
Is RadMobile free?
RadMobile is free to download, with no in-app purchases.
Do RadioactivityCounter or RadMobile have ads?
Neither RadioactivityCounter nor RadMobile shows ads.
Which is updated more often, RadioactivityCounter or RadMobile?
RadioactivityCounter ships an update every 15 months, and RadMobile every 2 months. Most recently, RadioactivityCounter was updated on October 30, 2026 and RadMobile on October 29, 2026.

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