Soaper

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.
—
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
• 82 oils with complete fatty acid profiles and saponification values
• 32 fragrances, 31 colorants, and 107 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. The app suggests swaps to hit your target metrics without trial and error.
—
BATCH TRACKING
Recipes are just the start. Soaper tracks your actual soap making.
Beginner Mode: 7-phase guided workflow walks you through safety setup, lye mixing, oil prep, tracing, and molding. Educational prompts explain why each step matters.
Advanced Mode: 3-phase streamlined flow for experienced makers. All the prep and mixing steps condensed, with timers and batch notes.
Both modes include timers with notifications—step away from your soap and the app tells you when to come back.
—
INVENTORY & SHOPPING
Know what you have. Know what you need.
Track on-hand quantities for every ingredient. Get low-stock alerts before you run out. When you're ready to restock, 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 Score — 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
Each metric shows status: excellent, good, warning, or needs work.
—
FREE VS PREMIUM
Free: Unlimited recipes, all 10 quality metrics, Blend Lab optimization, PDF export.
Premium ($2.99/month or $19.99/year): Guided batch flows, inventory management, shopping lists, supplier tracking, and no ads. Includes a 2-month free trial on annual plans.
—
BUILT FOR SOAP MAKERS
Soaper exists because spreadsheets and paper calculators deserve to retire. Whether you're making your first batch or your five hundredth, the chemistry stays consistent and the math stays invisible.
Terms of Use: https://soaperapp.com/terms.html