RadexM 4+

Excellent radiation detector using scintillator and photodiode.

Software is simple but with all functions you are likely to need for survey and gamma spectrum work. Can download data to iOS device.

The app is a great addition to the already easy to use Obsidian detector. The mapping feature is especially helpful for my work restoring historic structures, many of which are on old mine sites. I have another device with a less sensitive GM tube that has picked up higher than background readings at some of these locations. With the Obsidian scintillation detection and mapping feature I can finally know which sites are hot and take the proper precautions. One thing I wish this app had was a glossary of sorts that described what some of the spectrum readings mean and how to read them. I am a definitely a novice when it comes to radiation detection and it would be great to have a built in guide that breaks down the readings and features in a way that a noobie with no prior radiation education can understand. Other than that great product!

It works as expected and can store the data. I can see all graphics and continuous measurements