Radiation Alarm
Free App
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About Radiation Alarm
Turn your Android device into real ionizing radiation detector!
It is NOT a fake! A camera built-in your smartphone/tablet is sensitive to harmful gamma radiation. The application is really easy to use, but you must strictly follow given instructions.
The application has three thresholds (states) of the levels of radiation:
--> There is no radiation. Radiation is not detected. you are safe
Application indicates that there is no radiation if it can't register any traces left by gamma quanta. This state also occurs in the beginning of measurement. Wait for a few minutes to be sure that you are safe.
--> Low radiation level is detected
Application detected a low radiation level - up to about 10-20 uSv/h (according to measurement carried out on SE Xperia Neo V and Lenovo IdeaPad). The level of radiation isn't dangerous but it's strongly recommended to continue carrying out the measurement for next a few minutes to be sure if there is no more serious problem. And you should think about the source of this radiation.
With some devices it is also possible to detect cosmic radiation during flight by airplane (on altitudes higher than 10 km).
--> Radiation hazard
You should run away. The threshold for this stage is about 100-150 uSv/h. Make sure that you didn't uncover your camera during all the measurement. Repeat the measurement and call the local authorities. It is really serious situation but don't panic - everything will be ok!
The application was calibrated using Cs-137 ionizing radiation source in the Institute of Nuclear Physics, Polish Academy of Sciences in Cracow, Poland.
Cs-137 is one of the most dangerous isotope contaminating environment during nuclear accidents (e.g. in nuclear power plants etc.).
How to use the app (the instruction is also shown to the user on the first run):
1st step:
Cover main camera in your device using e.g. a piece of black tape. You MUST cut off visible light completely!
2nd step:
Run the application, read the instruction again, scroll down and push "Calibrate" button. The app will ask you if you prefer fast or accurate calibration. Of course the second one is recommended. Remember! During the calibration your device must NOT be exposed to higher (than normal background) level of ionizing radiation!
3rd step:
Your device and application is ready to detect ionizing radiation. During the measurement your camera must be covered by a piece of black tape. But after measurement you can uncover it and take pictures normally.
WARNING! The authors of the application put as much effort as they could to make the application the best. But there is no guarantee that application will work properly, won't damage your device and will be able to detect ionizing radiation properly.
The application is available for free, but it will be very kind of you if you could send me the report of successful radiation measurement. All information will be very helpful to improve the application!
It is NOT a fake! A camera built-in your smartphone/tablet is sensitive to harmful gamma radiation. The application is really easy to use, but you must strictly follow given instructions.
The application has three thresholds (states) of the levels of radiation:
--> There is no radiation. Radiation is not detected. you are safe
Application indicates that there is no radiation if it can't register any traces left by gamma quanta. This state also occurs in the beginning of measurement. Wait for a few minutes to be sure that you are safe.
--> Low radiation level is detected
Application detected a low radiation level - up to about 10-20 uSv/h (according to measurement carried out on SE Xperia Neo V and Lenovo IdeaPad). The level of radiation isn't dangerous but it's strongly recommended to continue carrying out the measurement for next a few minutes to be sure if there is no more serious problem. And you should think about the source of this radiation.
With some devices it is also possible to detect cosmic radiation during flight by airplane (on altitudes higher than 10 km).
--> Radiation hazard
You should run away. The threshold for this stage is about 100-150 uSv/h. Make sure that you didn't uncover your camera during all the measurement. Repeat the measurement and call the local authorities. It is really serious situation but don't panic - everything will be ok!
The application was calibrated using Cs-137 ionizing radiation source in the Institute of Nuclear Physics, Polish Academy of Sciences in Cracow, Poland.
Cs-137 is one of the most dangerous isotope contaminating environment during nuclear accidents (e.g. in nuclear power plants etc.).
How to use the app (the instruction is also shown to the user on the first run):
1st step:
Cover main camera in your device using e.g. a piece of black tape. You MUST cut off visible light completely!
2nd step:
Run the application, read the instruction again, scroll down and push "Calibrate" button. The app will ask you if you prefer fast or accurate calibration. Of course the second one is recommended. Remember! During the calibration your device must NOT be exposed to higher (than normal background) level of ionizing radiation!
3rd step:
Your device and application is ready to detect ionizing radiation. During the measurement your camera must be covered by a piece of black tape. But after measurement you can uncover it and take pictures normally.
WARNING! The authors of the application put as much effort as they could to make the application the best. But there is no guarantee that application will work properly, won't damage your device and will be able to detect ionizing radiation properly.
The application is available for free, but it will be very kind of you if you could send me the report of successful radiation measurement. All information will be very helpful to improve the application!
All Application Badges
Free
downl.
downl.
Android
2.2+
2.2+
Android app
App History & Updates
What's Changed
*higher sensitivity
*three state: no radiation, low level (from about 10 μGy/h), high radiation level
*higher sensitivity
*three state: no radiation, low level (from about 10 μGy/h), high radiation level
More downloads Radiation Alarm reached 100 000 - 500 000 downloads
More downloads Radiation Alarm reached 50 000 - 100 000 downloads
What are users saying about Radiation Alarm
T
by T####:
by T####:
If you are one of the people who said that light is a radiation hazard from the app, that is because you don't know what directions are. The directions the app has in the beginning is STEP 1: OBSCURE YOUR CAMERA. That means you cover up your camera so then the alarm won't be able to detect solar radiation. So next time you give a bad review, then read the directions properly so you have all the information to make sure everything works right (along with that the app works well)
T
by T####:
by T####:
Measured against a 58.1 Curie source(1.91 Tbq) contained in a closed state- Delta 880 camera. Source measured was Iridium 192
R
by R####:
by R####:
Won't even come on.
K
by K####:
by K####:
FAKE DON'T DOWNLOAD IT WASTE OF TIME
T
by T####:
by T####:
Tested the same device got a 148 first time then tested it 4 more times and got a 48 every thing I tested came out as a 48 no way that's right camera was covered the whole time
T
by T####:
by T####:
I thought "It's just another prank one" until I walked over to my microwave to get my pizza when I saw a radiation symonble and it was in a yellow tint and backround. So I said to my self "It actually works!"
T
by T####:
by T####:
Actually works! Tested with delta 880 Ir192 and spec 300 Co60 cameras. Readings were fairly quick from none to low to high. Would be great if app could translate bright pixels to actual units uSv
T
by T####:
by T####:
This maybe fake, and do you know why it's fake? Well, there's radiation all over the world. Even in our body's there's radiation. Radiation in microwaves, nuclear bombs, air and in our hands. In our hands there's about 25% radiation, in microwaves there's about 90% radiation, and guess what! In nuclear bombs there's about 10,000% radiation. You're gonna have a hard time believing that!
T
by T####:
by T####:
Would be nice if an option exists that allows to app to run continuously in background for when visiting places like Japan or China.
J
by J####:
by J####:
3/3. No.1 radiaton detection app choice choice. Loved it. And also, there should be a customizable (can be renamed, annotated, & etc.) history of detected radiation (max, average, & min detected radiation) that could be sent back to you. You should provide an email address for lengthy reports, suggestions, & etc. like this to to be more exclussive. Strongly recommended to everyone. Thank you very much.
Y
by Y####:
by Y####:
It's intellectually offensive how many idiots fail at basic instruction reading, the kind of skills you pick up in the first grade. Read how to use this app before giving it a bad rating because it works exactly the way the devs say it works. The only complaint I have is that it takes an awkward two minutes to calibrate before its useful. But its still useful in the end.
Y
by Y####:
by Y####:
You will get a false positive without covering the camera from light during testing as well as calibration. There is a metal semiconductor microchip in the camera that can pick up on gamma radiation, but light radiation needs to be filtered out. What units does the "sum" reading measure in?
P
by P####:
by P####:
So far so good. App is small, clean and low on resources. Icon fits. Hard to say how well it works at the current moment, need more time. Will update rating.
D
by D####:
by D####:
Any light is considered radiation hazard... This is so fake... Don't waste your time.
Y
by Y####:
by Y####:
I thought "It's just another prank one" until I walked over to my microwave to get my pizza when I saw a radiation symonble and it was in a yellow tint and backround. So I said to my self "It actually works!"
Y
by Y####:
by Y####:
I went into VA for Xrays. Room was very dark. I held my thumb over camera lense. Numbers stopped counting. After xray numbers.had increased.
Y
by Y####:
by Y####:
This maybe fake, and do you know why it's fake? Well, there's radiation all over the world. Even in our body's there's radiation. Radiation in microwaves, nuclear bombs, air and in our hands. In our hands there's about 25% radiation, in microwaves there's about 90% radiation, and guess what! In nuclear bombs there's about 10,000% radiation. You're gonna have a hard time believing that!
J
by J####:
by J####:
FAKE DON'T DOWNLOAD IT WASTE OF TIME
A
by A####:
by A####:
Radiation is when heat is given off a object. It can also be measured in uv lights LIKE THE ONES THE SUN GIVES OFF
Y
by Y####:
by Y####:
It basically said I live In a nuclear reactor and unless I don't know it there is no radiated objects except my microwave which happened to be like 19 meters away
Y
by Y####:
by Y####:
Nice app but sorry I tried it twice at the moment in the same place and it didn't give me same result
Q
by Q####:
by Q####:
To use this app there has to be radiation in the AIR, putting it on plutonium is not gonna trigger it, u have to be somewhere that has radiation particals in the air
Y
by Y####:
by Y####:
I have a Ukraine radiation detector so I can measure the accuracy of this software as far as I can tell it's accurate Bravo
X
by X####:
by X####:
It's intellectually offensive how many idiots fail at basic instruction reading, the kind of skills you pick up in the first grade. Read how to use this app before giving it a bad rating because it works exactly the way the devs say it works. The only complaint I have is that it takes an awkward two minutes to calibrate before its useful. But its still useful in the end.
B
by B####:
by B####:
This has to be the coolest app yet. Ignore the crummy reviews. Most of these are from people who didn't read the developers detailed instructions on this page. I tested with a natural Uranium source and got about 14-20 counts. Fantastic!
X
by X####:
by X####:
Till now it seems a good app but during calibration do we need to cover both the cameras..or only back camera
O
by O####:
by O####:
My family member has a dose of radiation to burn out her thyroid and it detected it it does have some delay but it works
X
by X####:
by X####:
I was able to test this app in a secondary laboratory of dosimetry calibration, an the alert went on with a 20mSv/h radiation field and the detector need 4.5sec. To rise the alert. The app works but when you were able to notice it, you probably would be dead.
X
by X####:
by X####:
On paper, the theory sounds believable.. but in practice not so.. Tried what the dev has suggested but results were very much a hit n miss. Am not radiation expert but perhaps, the dev could suggest some house hold items that we can try this app on that would garner real results. Anyway, great attempt.
X
by X####:
by X####:
Wow!!! this thing really works love it. You should really read it before use it will really help you enjoy it batter
X
by X####:
by X####:
This maybe fake, and do you know why it's fake? Well, there's radiation all over the world. Even in our body's there's radiation. Radiation in microwaves, nuclear bombs, air and in our hands. In our hands there's about 25% radiation, in microwaves there's about 90% radiation, and guess what! In nuclear bombs there's about 10,000% radiation. You're gonna have a hard time believing that!
X
by X####:
by X####:
Really cool idea! People really need to read the instructions before giving this bad reviews haha
X
by X####:
by X####:
It basically said I live In a nuclear reactor and unless I don't know it there is no radiated objects except my microwave which happened to be like 19 meters away
X
by X####:
by X####:
Tried with uranium glass. Worked!
X
by X####:
by X####:
It reacts to light o.O"
X
by X####:
by X####:
I had just taken my radioiodine yesterday... everytime I hold the phone, it says radiation hazard. Lol.
X
by X####:
by X####:
no explanation useless
X
by X####:
by X####:
pointed at light and radiation went up
R
by R####:
by R####:
My family member has a dose of radiation to burn out her thyroid and it detected it it does have some delay but it works
by T####:
You will get a false positive without covering the camera from light during testing as well as calibration. There is a metal semiconductor microchip in the camera that can pick up on gamma radiation, but light radiation needs to be filtered out. What units does the "sum" reading measure in?