I have a feature suggestion...
How about a random recipe generator? You put in the total amount of soap you want. This would include the wa,yet, oils a lye. For example I want a recipe that is a total of 60 oz. I put that in and the click the random recipe generator button and it randomly selects the oils, and then calculates the water and lye to give you the size recipe you want. Maybe you could let use copse the maximum number of oils it can make the recipe with.
I think this would be interesting, unique, fun and useful. Of course do this after every thing else is done.
Also I would like to donate a couple of dollars to you and your project. How would I do this? Check in the mail?
Robert