RadonEye 4+

The app is easy to get up and running. However, there should be a setting to disable the loud beep each time a Bluetooth connection is made. That quickly gets very annoying.

The graphing of data really misses having a time stamp on the x-axis. It makes trying to understand daily patterns painful. Even the exported data doesn’t enable time tracking easily. So the whole feature set of having trend data is really crippled by this omission.

Otherwise, very pleased with the monitor so far.

I was a radiochemist for over 8 years and worked five of those years at a nuclear reactor. That doesn’t make me an expert on radon by any stretch but I suspect my experience gives me a perspective that your typical home radon testing consumer doesn’t share. What’s remarkable to me, however, is that despite my background, I feel exactly as other do: This app needs work. The fact I can’t do something as simple as rename a device to, for example, “Utility Room” speaks volumes. So, too, does the chief complaint expressed by many reviewers here: The app will not allow one to plot radon readings in a way that’s easily understood by your run-of-the-mill consumer. I should be able to select a date and time and the graph should return those readings. Why is something so simple out of reach? I suspect it’s because this company neither has the staff nor the expertise to address the app’s—and to a lesser degree, the RadonEye unit’s—glaring shortcomings. Nothing says “I don’t care!” more than a company that hasn’t updated their app in over 4 years and that’s why this gadget is going back.

The best sensor at a reasonable price combined with a workable app. Unlike Airthings, this app / hardware combination doesn’t reliably choke on large downloads, it just works quietly in the background unless it detects an error and then it warns you.

Could the app use some work? Yep, for example it could save / show the data in a format that includes time and date to make it more legible to humans. At the same time, it’s biggest use is determining whether a space is safe or not. For that, it works exceedingly well (with the usual time delay of any sensor) and mitigation efforts should show up decisively, if effective.

I used RadonEye to ensure that the repairs we did to the basement made effective reductions to absolute as well a average radon levels. For that task, it is perfect.