Soaper - Soap Calculator

Soaper turns soap recipe math into tap-and-go simplicity. Enter your oils, see instant lye calculations, and watch 10 quality metrics update in real time. No spreadsheets. No guessing. Just better soap. Built on soap chemistry first principles. Fully translated into 34 languages. WHAT YOU GET Automatic lye calculations for NaOH (bar) and KOH (liquid) soap 10 quality metrics: hardness, lather type, gentleness, cure time, shelf life risk, and more Auto Additives, Colorants and Fragrances — starting amounts scaled to your batch weight, with a tap to see where each number comes from Fragrance safety warnings that flag blends pushing past skin-safe levels Photos and documents — attach recipe shots, oil safety sheets, and supplier invoices to any item in your library 80+ oils with complete fatty acid profiles and saponification values 33 fragrances, 31 colorants, and 117 additives in the database Three water calculation methods to match your preferred technique Superfat control from 0% to whatever you like BLEND LAB Not sure which oils to use? Blend Lab shows you. Add oils and watch quality bars move in real time. Filter by chemistry — find oils that boost lather, improve hardness, or extend shelf life. Soaper suggests swaps to hit your target metrics without trial and error. BATCH TRACKING Recipes are just the start. Soaper tracks your actual soap making across three process types: Cold Process, Hot Process, and Liquid Soap (KOH). Each has process-specific phases, timers, and educational content. Beginner Mode: step-by-step guided workflow with educational prompts. Advanced Mode: streamlined flow for experienced makers with condensed steps, timers, and batch notes. Both modes include timers with notifications — step away and the app tells you when to come back. Track active batches, monitor cure progress, and log notes and photos. INVENTORY AND SHOPPING Know what you have. Know what you need. Track on-hand quantities for every ingredient. Get low-stock alerts. Recipe availability shows which recipes you can make right now. The shopping list groups items by supplier with contact info and pricing notes. Start a batch and ingredients deduct automatically. No manual math. QUALITY METRICS EXPLAINED Soaper calculates 10 properties for every recipe: Oil Balance — saturated vs unsaturated ratio Foam Speed — how quickly lather forms Skin Gentleness — moisturizing and conditioning Fluffy Lather — big, airy bubbles Creamy Lather — dense, stable foam Set Speed — how fast the bar hardens Bar Longevity — how long it lasts in the shower Cure Time — estimated weeks until ready (4 weeks to 12 months depending on oils) Lather Stability — bubble longevity from castor oil Shelf Life Risk — DOS / rancidity warning for high-linoleic blends FREE VS PREMIUM Free: unlimited recipes, all 10 quality metrics, Blend Lab optimization, PDF export. Premium ($2.99/month, $19.99/year, or $79.99 lifetime): guided batch flows, inventory management, shopping lists, supplier tracking, recipe cost estimates, ad-free. Annual plan includes a 2-month free trial for new subscribers. BUILT FOR SOAP MAKERS Whether your first batch or your five hundredth, the chemistry stays consistent and the math stays invisible. Soaper is built and maintained by Burnished Labs, LLC. Privacy policy: https://soaperapp.com/privacy