Saponify Soap Calculator (Legacy) is an Android-based app that helps soap makers to create and use their soap recipes. Whether you are a beginner or a mature soap maker, Saponify is here to help you calculate your soap recipes. With over 70 most popular oils, options for liquid (KoH) or hard (NaOH) soap, superfat calculation, and many water calculation options, this app is the perfect tool for soap makers.

Saponify Soap Calculator (Legacy) is designed to help you recalculate soap recipes for new total weight, and it allows you to use any measurement unit for your taste, including grams, ounces, and pounds. It also features integration with Dropbox to save recipes, works offline, and is completely free. However, the app uses Google Analytics to anonymously track usage data within the application.

Overall, Saponify Soap Calculator (Legacy) is an excellent app for soap makers of all levels. It is easy to use, provides accurate calculations, and offers a wide range of features to help you create your perfect soap recipe. While the app may not be perfect, the developers are open to feedback and suggestions to make it the best lye calculator app.