This is not a fake Geiger counter app!
This app displays the real Beta radiation levels as measured around the United States by the Environment Protection Agency's radiation network (U.S. EPA RADNET).
There are usually over 100 monitoring locations online. Check your local levels or check on friends and family in other cities.
Please note that the app is getting the latest data from the EPA; if their servers are not responding properly, you may receive an error. As the app says, please try again later.