Soapie: Lye & Soap Calculator

Soapie is a soap calculator and lye calculator for cold process, hot process and liquid soap. Work out exactly how much lye and water your recipe needs, then follow the batch from first weigh-in to fully cured bar.

Works offline. No account. Your recipes stay on your device.

LYE & WATER CALCULATOR
• NaOH, KOH or hybrid lye blends, with lye purity adjustment
• 172 oils, butters and waxes with SAP values and fatty acid profiles
• Superfat control and three water methods: water as % of oils, lye concentration, or water-to-lye ratio
• Citric and lactic acid compensation built in

RECIPE BUILDER
• Build by percentage or by weight, in grams or ounces
• See fatty acid profile and soap property estimates as you go
• Scale batches to your mold, swap oils and compare recipes
• Versions are saved exactly as you made them
• Start from a library of starter recipes

MAKE MODE
• Weigh each ingredient step by step with green, orange and red deviation indicators
• Step timers, temperature logging, notes and photos
• Never wonder "did I add the coconut oil?" again

CURE TRACKING
• Automatic cure countdowns with ready dates and reminders
• Track cure weight and check in with notes and photos
• See which batches are curing and which are ready, plus home screen widgets

COST PER BAR & INVENTORY
• Cost per batch and per bar from real purchase prices, using FIFO lots
• Track oils, butters, lye, fragrances and additives with suppliers and stock levels
• Shopping list for what you are running low on

LABELS & SHARING
• INCI ingredient label generator
• Export recipes as PDF or share by QR code
• Import recipes from photos or screenshots

SOAPIE PRO
Core lye calculations are unlimited without paying. Soapie Pro unlocks unlimited recipes, batches and inventory, plus PDF export, photo import, recipe compare and more. Pro is available as a one-time lifetime purchase or an annual subscription.

The annual subscription renews automatically unless it is turned off at least 24 hours before the end of the current period. Payment is charged to your Apple Account at confirmation of purchase. Manage or cancel anytime in your Apple Account settings. Any unused portion of a free trial is forfeited when you buy a subscription.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://soapapp-landingpage.pages.dev/privacy/
Privacy Policy and Terms are also available in the app under Settings.

172 oils. Zero guesswork. From recipe to finished bar.