Very helpful – Soap calc Review

This is exactly what I was looking for. You can input your variety of oils and the app will tell you how much lye to use, with options for changing the superfat percentage. The app will predict the characteristics of your soap, and you can email the results to yourself to keep as a record. Others have commented on the app crashing, though I haven't experienced this yet. It would be nice if it allowed you to save your recipes for later tweaking or let you easily scale your recipes for batches of various sizes, but it is still a good tool.
Review by scrotz1 on Soap calc.