RadioactivityCounter

Einfach und genial! Danke schön

This app is amazing. I really take my hat of to the developers of this app. How the turned a smart phone camera into a Geiger counter is really amazing. The only tiny down side is that it doesn't make a click sound but hopefully that will change soon. I am 13 years old and recently I have been developing a interest in radiation and I needed a Geiger counter. This is the perfect starting counter and I really do admire the people who made this app. Keep up the great work!!!

Could use more options. Cannot switch to rear camera on iPhone. (only lets you use front camera)

detects uranium glass and microwave

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.

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!

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

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.

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.

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.