# GammaPix > Phone camera-based ionizing radiation detector for preliminary threat assessment. (iPhone/iPad app by Image Insight, Inc..) - Source: https://appshunter.io/ios/app/gammapix/id578395611 (this page in markdown: same URL + `.md`) - Developer: [Image Insight, Inc.](https://appshunter.io/developer/578395614) - Category: Utilities - Price: $14.99 - Rating: 2.00/5 from 4 App Store ratings · 10 written reviews indexed - Age rating: 4+ - Requires: iOS 8.0 · 13 MB - Languages: Arabic, Dutch, English, French, Japanese, Korean, Russian, Spanish - Released: 2013-01-14 - Data updated: 2026-06-10 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/gammapix/id578395611/reviews.md ## What is GammaPix? The GammaPix(TM) App, developed initially for several federal agencies, turns your phone into a detector of ionizing radiation. This isn't one of those fake Geiger counters. It uses your phone's cameras as the radiation detector. The GammaPix technology has been successfully tested at independent labs with calibrated sources. It was developed with support from the U.S. Department of Defense, the Domestic Nuclear Detection Office (U.S. Department of Homeland Security), and the Transportation Research Board (U.S. National Academy of Sciences). We were encouraged by them to bring this technology to the public. Worried about accidental exposure to radioactive material or acts of terrorism? The GammaPix App can provide timely warning of the presence of radioactivity using nothing more than your phone's camera. While it is NOT meant to be a substitute for dedicated ionizing radiation detectors, it is a rapid and convenient way of making preliminary threat estimates. This is a tool. Various circumstances may compromise the measurement or make the results inaccurate. o Real-time mode. Watch the results as a reading is being taken. o Three-stage mode. Quick warning of danger. A full-length reading to look for lower doses. o Use either camera. o Calibrations for iOS devices for iPhone 5S and earlier o Map display of readings We hope you enjoy using GammaPix! Notes: A 10 to 20 minute initialization is required before you use each camera for the first time. We know this step slows you down, but it really is necessary to get the best results. Please perform this step in a place you know is likely to be free of excessive radioactivity, with your device cool and unplugged. For best results make sure no light is getting into the camera when you run the GammaPix app. Putting the phone in your pocket or covering it with a book works well. Electrical tape A reading takes about 3 to 5 minutes if there's no danger. Dangerous levels will be reported sooner. The GammaPix App will not work on some phone models because the camera optimization at low light levels gives "bright" pictures. App may not work on some individual iOS 8 devices. Disclaimer: The type of radiation picked up by the camera can be dangerous and detrimental to the user's health as well as cause damage to the device. Various circumstances may compromise the measurement or make the results inaccurate. ## Key features - Ionizing radiation detection - Uses phone camera as sensor - Real-time detection mode - Three-stage detection modes - Map display of readings - Supports front and rear cameras ## Recent user reviews (10 of 10) All indexed reviews: https://appshunter.io/ios/app/gammapix/id578395611/reviews.md ### 1/5 — Scam *2023-12-21* Don’t buy it because it doesn’t work it would tell you your phone camera. It has very poor quality even though you have an iPhone 5 the next few hours you will receive a bill for 300+ dollars from a random email, saying Norton company will charge you 300 something dollars for three years subscription. If you don’t want it or a refund call this number but do not attempt to call because they will get your phone number and then with your phone number, they will get your address and your name and then they can say you requested that productthrough your personal info, so call the bank and ask for reverse transaction and report scam. Thank you. ### 1/5 — Over charged *2022-08-18, version 3.0.1* App said I was being charged 15.00 but it actually charged me 30. No way to contact anyone about a refund. Developer site does not seem to work. ### 1/5 — Doesn’t register radiation *2019-04-29* My colleague and I tested on different phones to measure different strong radioactive sources, yet it didn’t register anything. Happy for the Gammapix creators to respond. ### 1/5 — Paid Twice? *2017-11-14* I don’t know what’s happened to this app, I already purchased it ages ago, but wouldn’t download on the latest update. Deleted it and reinstalled it, but it charged me again! It was already initialised when I first bought it, and now wants to do it all over again......don’t know what’s going on. ### 5/5 — Works *2015-08-08, version 2.0.1* Great app works well ### 1/5 — Don't Waste Your Money *2015-02-13, version 2.0.1* This is a horrible product. I have an Iphone 5c and the app crashes every single time it tries to set up. For almost $5 you should spend your money on something that works! ### 1/5 — app not work on S4 *2013-10-04, version 2.0.0* why buy here when droid app failed ### 5/5 — Awesome *2013-07-30, version 1.0.3* So digital cameras usually filters out the items this app detects. Tested it on some radioactive samples and it works as advertised! Definitely a tool for the emergency responder tool bag. ### 5/5 — Amazing and fun app *2013-04-16, version 1.0.2* This app actually works. I was at a hospital and got a slightly higher reading and it turned out I was adjacent to a place they stored radioactive material. ### 5/5 — Amazing Utility *2013-02-23, version 1.0.2* This app is the real deal. In less than 20 minutes the ambient gamma radiation level was determined. An amazing technological app for the price. The initial calibration took about 20 minutes. My first and subsequent recordings were then done in less than 10 minutes. The displayed results were easily interpreted. Appreciated features: Ease of use. Easy to An amazing technological app for the price. results. Previous readings / locations are automatically stored. Clear explanations in the info section. A timer feature would be nice to allow for pre-programmed recordings to be set up. ## Frequently asked questions about GammaPix ### Does GammaPix have ads? No, GammaPix does not contain advertisements. ### How much does GammaPix cost? GammaPix is a paid application, priced at $14.99. ### What devices does GammaPix support? GammaPix is available for iPhone and iPod. Calibrations are provided for iOS devices iPhone 5S and earlier. ### What is the age rating for GammaPix? GammaPix has an age rating of 4+. ### How often is GammaPix updated? The latest version of GammaPix is 3.0.1, which was last updated on June 5, 2017. ### What is the user sentiment for GammaPix? GammaPix has an average rating of 2.0 stars from 4 ratings, indicating a mixed to negative user reception. ### Does GammaPix require an initialization period? Yes, GammaPix requires a 10 to 20 minute initialization period for each camera before first use to ensure the best results. ### Are there any limitations to GammaPix's accuracy? Yes, the app states that various circumstances may compromise the measurement or make the results inaccurate. It is not a substitute for dedicated ionizing radiation detectors. ## Version history (last 5 releases) ### 3.0.1 — 2017-06-05 This app has been updated by Apple to display the Apple Watch app icon. All new UI, including a map displaying the locations of your readings. Faster measurements. Improved detection algorithms. Higher sensitivity. New initialization required, but it'll be much more sensitive! Fix for crash on upgrade. ### 3.0.0 — 2017-06-04 All new UI, including a map displaying the locations of your readings. Faster measurements. Improved detection algorithms. Higher sensitivity. New initialization required, but it'll be much more sensitive! ### 2.0.1 — 2013-11-17 Bug fixes. ### 2.0.0 — 2013-09-12 Use either camera Real-time mode. Watch the results as a reading is being taken. Calibrations for all iOS devices Uses full 4-inch display Bug fixes and improvements ### 1.0.3 — 2013-07-28 Fix for license issue on some devices. ## Apps similar to GammaPix | App | Rating | Price | Category | | --- | --- | --- | --- | | [RadexM](https://appshunter.io/ios/app/radexm/id1524841479) | 4.8 (18) | Free | Utilities | | [Sensor Play - Data Recorder](https://appshunter.io/ios/app/sensor-play-data-recorder/id921385514) | 4.7 (59) | $14.99 | Utilities | | [MQTT Loupe Pro](https://appshunter.io/ios/app/mqtt-loupe-pro/id1621322612) | 5.0 (1) | $1.99 | Utilities | | [SmartIOT-Mrocioa](https://appshunter.io/ios/app/smartiot-mrocioa/id1634450900) | 2.7 (3) | Free | Utilities | | [Sound Level Analyzer PRO](https://appshunter.io/ios/app/sound-level-analyzer-pro/id1321243615) | — | $9.99 | Utilities | | [SoundMeter Pro 2020](https://appshunter.io/ios/app/soundmeter-pro-2020/id1530068189) | — | $99.99 | Utilities | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*