Formulator - Lye Calculator
Utilities
$7.99 · Designed for iPad. Not verified for macOS.
Formulator - Lye Calculator is a focused soapmaking calculator for makers who want clear lye and water numbers before they start a batch.
Build formulas from a multi-source SAP oil table, switch between grams and percentage mode, add custom manual SAP oils, adjust superfat and lye purity, and save recipes for later. The calculation receipt shows the zero-superfat lye, active lye, rounded final lye, rounded water, SAP dataset, and water model used for the result.
The app supports NaOH hard bar soap and KOH liquid or paste soap calculations, with safety warnings and scale-aware rounding: lye rounds down and water rounds up to 0.1 g.
For lye-based soap only. Always use proper personal protective equipment and safe soap making practices.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Improvements and bug fixes
The developer, So Good, Ltd. Co., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- So Good, Ltd. Co.
- Size
- 4.3 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 So Good, Ltd. Co.
