Android App Store Link
Android version of my Density variation calculator.
It is a simple app that calculates allowable density variation under the rules of ASME Section V.
You measure the density in the body of a hole type IQI or next to the essential wire of a wire type IQI and then it calculates the min and max densities in the area of interest. The ranges are minus 15% to plus 30% ( except the plus 30% can be exceeded when using a shim under a hole type IQI).