SoapDIY is useful tool and providing managerment of your only recipe for doing handmade soap by yourself. It's easy to create your recipe and it will calculate how many HaOH and water which you should use. And it will provide you the INS value which is the hardness index of the soap. After you have calculated , you could save it to recipe database.
We wish you could love this app. If your have some other suggestion , please e-mail to me.