Download of SpekCalc 1.1 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus.
This free Mac app was originally produced by Gavin Poludniowski and Phil Evans. The software is also known as "SpekCalcOSX". The software belongs to Productivity Tools. Spekcalc_osx_release_1.1_l.zip is the default file name to indicate this app's installer. The most popular version of SpekCalc for Mac is 1.0.
From the developer:
SpekCalc is an application for calculating the X-Ray emission spectra from tungsten adnodes such as those used in the diagnostic radiology and kV radiotherapy X-ray tubes. This is a light version, which only operates in the energy region between 80 and 100 kV, and for aluminium filtration.
You may want to check out more software for Mac, such as Googol, Soap SAP or Universal Currency Converter, which might be similar to SpekCalc.