You could have downloaded The Soap Calculator 3.0 from our software library for free. The software lies within Office Tools, more precisely Calculators. This tool was originally produced by The Soap Cellar.
From the developer:
Use The Soap Calculator to create your very own cold processed or lye soap formulas. The Soap Calculator simplifies all of your formulating needs for making hand crafted soap. For beginner thru professional soap makers, the simple interface allows the choice of over 100 different oils used in the industry of making hand crafted soaps.
You may want to check out more software, such as Free Percentage Calculator, Rad Pro Calculator or MHS Financial Calculators, which might be related to The Soap Calculator.