GeneralCalculators 1.1 for Mac could be downloaded from 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. The application lies within Productivity Tools, more precisely Office Tools. This software for Mac OS X was originally created by Vegh Robert.
From the developer:
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GeneralCalculators app comprises 531 calculators which are grouped in 23 categories. These calculators will simplify calculations which have given you headaches so far.
You may want to check out more Mac applications, such as PitStop Extreme, 3dissue or FileOpenInstaller, which might be similar to GeneralCalculators.