United StatesRadioactivityCounter 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).
works well
detects uranium glass and microwave
United StatesFailed 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.
United StatesNone 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!
United StatesDid 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.
United StatesAwesome information
I just had radiation treatment for my thyroid and it has been helpful to know how much radiation remains in my neck and watch it as it dissipates. It provides warning quite well when the phone is near my neck.
United StatesRadiation therapy patient is impressed.
I doubted the validity of this app, so I tested in the linear accelerator room during my morning radiation therapy. 10 feet off to the side, It worked and actually sounded alarms when the beam was activated.
United StatesAmazing sensor usage; not fake
Hats off to the developer for implementing a real measurement tool for radioactivity. Visit his website to see his calibration data, I know that measurements from my iPhone 6p matched my 'real' instrument by detecting faint radiation from my granite countertops.
United States
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.
Subscribe our newsletter and get useful information every week.
Other Utilities Apps
Similar Apps