
Lyewise: Soap Calculator
Lye calc, recipes & labels
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Free
In-App Purchases
Rating summary
About
Lyewise is a soap calculator built for makers who sell what they make. Calculate lye and water with confidence, let the Optimizer design a recipe from the oils on your shelf, print ingredient labels with INCI names, and track every batch from mixing bowl to market table.
LYE CALCULATOR (FREE)
• 140+ oils, butters and waxes with reference SAP values and fatty acid profiles
• NaOH for bars, KOH for liquid soap, or dual lye
• Superfat, lye purity and three water methods: % of oils, lye concentration or water:lye ratio
• Fragrance by % or ounces per pound, citric acid compensation and additives
• Enter oils by percent or by weight, in grams, ounces or pounds
• Hardness, cleansing, conditioning, bubbly, creamy, iodine and INS with recommended ranges
• Fatty acid chart and plain-language warnings
• Size a recipe to your mold
• Starter recipes: castile, bastille, palm-free, salt bar and more
RECIPE OPTIMIZER (PRO)
Pick the oils you have, set limits like "coconut at most 30%", and choose a goal: balanced, gentle, big lather or hard and long-lasting. Lyewise finds the percentages that hit the target and can pick the cheapest blend using your supply prices.
INGREDIENT LABELS (PRO)
Generate ingredient lists in descending order by weight: INCI before saponification, saponified INCI (sodium olivate, sodium cocoate…) or plain English. Add your shop name, net weight and lot number, then export a printable PDF.
BATCHES & CURE TRACKING
• Make a batch from any recipe with an automatic lot number
• Step-by-step make mode with exact weights
• Cure countdown and a reminder when bars are ready
• Photos, notes and ratings for every batch
SUPPLIES & COST PER BAR (PRO)
Track stock and prices for oils, lye, fragrance and packaging. Each batch shows its cost per bar, and making a batch takes ingredients out of stock.
PRIVATE BY DESIGN
No account, no ads, no tracking. Your recipes stay on your iPhone.
SAFETY
Lye is caustic. Lyewise calculates from reference data; always double-check a recipe before you make it. Labeling rules differ by country.
Lyewise Pro is available as a monthly or yearly subscription (the yearly plan includes a free trial) or a one-time lifetime purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://marmeq.github.io/lyewise/#privacy
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What's New in Lyewise
1.0.1
November 11, 2026
Thanks for making soap with Lyewise! This update refreshes the App Store listing. Questions or ideas? Reach us from Settings.
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Subscriptions & In-App Purchases
Lyewise Pro Yearly
Optimizer, labels, supplies and unlimited recipes
$19.991 Year
7 Days trial






