$4.99

Details

  • Released
  • Updated
  • February 1, 2012
  • July 28, 2016

Features

RadioactivityCounter screenshot #1 for iPhone
RadioactivityCounter screenshot #2 for iPhone
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About

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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What's New in RadioactivityCounter

2.2

July 28, 2016

This update from Apple will improve the functionality of this app. No new features are included. Rev 2.2. New algorithm for more stable camera cold starts, needs less recalibration, bugfix on unkown devices, and experimental upload function for statistics., new devices supported up to iPhone 6 - attention some feature made it incompatible to older devices or not having a sim card -- we work on this for the next version -- stay on the old version 1x when affected.

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User reviews

works well

detects uranium glass and microwave

Failed me in my time of need

I am in an intro to nuclear engineering class and I had to detect the number of gamma counts that a smoke detector would give off. I used this app, thinking nothing of it, but the second I put the tape on the cameras, I was greeted by 0 CPM constantly. It never deviated from that, which makes me believe that this was never a good app, and the reviews saying it was are lying. Either that or it worked on past phone builds but something has changed in the technology. I had to write my report on if this worked or not instead of finding the quantitative values I had to. Just very disappointed in it.
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None of this made sense!

I tried to use the app to check to see if any of the rocks I have been collecting show any signs of radiation. This description made this app look like what I needed. I dropped the $7, and have NEVER been so disappointed.

Nothing is in any sort of easy to decipher on the app. No idea how to use it, or even what it is for.

I would like a refund please!
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Did not work for me on iPhone 11 Pro

I believe the app needs updating to Support iPhone 11 Pro. I tried multiple ways it did not work as expected to me.

Zero stars

It does NOT work! I’ve just had I-131 treatment. I put my phone right next to the pill and there was no reaction whatsoever. The nuclear medicine technician told me that phone cameras cannot detect gamma rays. So don’t waste your time and money.

Developer apps

FAQ

What can RadioactivityCounter measure?

RadioactivityCounter can measure gamma radiation and some beta radiation. It cannot measure alpha rays. Examples of detectable sources include CS137 for gamma and H3 or K14 for weak beta radiation.

How accurate is RadioactivityCounter?

The app provides a rough start for measurements with default values, which should be sufficient for personal use. For precise professional measurements, an expert setup to adjust to the specific sensor is possible.

Does RadioactivityCounter require calibration?

Yes, proper calibration is required to turn your phone into a working radioactivity counter. It is recommended to recalibrate after iOS upgrades as camera data properties may change.

Is RadioactivityCounter safe to use?

The disclaimer states that the type of radiation picked up by the camera can be dangerous or detrimental to user health and device. Users should exercise caution and refer to provided resources for safe measurement practices.

What devices are compatible with RadioactivityCounter?

The app has been calibrated on various iPhone and iPad models, including iPhone 3GS through iPhone 6s, and iPad 2 and 3. However, some older phones might not be compatible due to new iOS versions or missing features.

How much does RadioactivityCounter cost?

RadioactivityCounter is a paid application priced at $4.99. There are no in-app purchases or advertisements associated with this app.

When was RadioactivityCounter last updated?

The latest version of RadioactivityCounter, 2.2, was last updated on July 28, 2016. The initial release date was February 1, 2012.

Does RadioactivityCounter have ads?

No, RadioactivityCounter does not contain advertisements. It is a paid application with a one-time purchase price.