The Art & Science of
Perfect Soap
Professional-grade calculations, intelligent oil blending, and guided workflows.
Everything you need to create exceptional soap, from first batch to thousandth.
Everything for Every Soap Maker
From your first batch to your thousandth, Soaper provides the precision and guidance you need.
Precise Lye Calculations
Automatic NaOH and KOH calculations with support for dual-lye formulations. Three water calculation methods: percentage of oils, lye concentration, or water-to-lye ratio.
- NaOH for bar soap, KOH for liquid soap
- Dual-lye blends with any ratio
- Superfat adjustments from 0-20%
- Percentage or weight-based entry
- Live quality predictions as you adjust
Comprehensive Ingredient Library
Access detailed data for 82 oils with complete fatty acid profiles and saponification values, plus 107 additives, 32 fragrances, and 31 colorants.
- 8 fatty acids tracked per oil
- NaOH and KOH sap values
- Usage guidelines for additives
- Scent profiles for fragrances
Professional PDF Export
Generate beautiful, professional documents for your workshop, records, or customers. Choose from 9 different export formats.
- Workshop Checklist for batch day
- Recipe Specification for records
- Customer Marketing sheets
- Display Cards, Price Tags, Product Info Cards & more
Blend Lab
Your intelligent oil blending workspace. 10 real-time quality metrics, smart optimization, and quality-based oil discovery help you craft the perfect formula.
Oil Balance
Saturated to unsaturated fat ratio
Bar Longevity
How long bars last in the shower
Cure Time
Predicted cure duration by oil profile
Foam Speed
How quickly lather develops
Gentleness
Moisturizing and skin-friendly
Fluffy Lather
Large, airy bubble quality
Creamy Lather
Dense, stable foam quality
Set Speed
Bar firmness at unmolding
Stability Boost
Lather bubble longevity
Shelf Life
Dreaded orange spots risk
Optimize For
Choose what matters most - Balanced, Oil Balance Score, Bar Longevity, Gentleness, Large Bubbles, Creamy Lather, or Set Speed. The algorithm adjusts your blend to hit your target.
Quality Filter Pills
Filter and sort available oils by the qualities you want. Multi-select targets and toggle direction to find oils that boost or temper specific qualities.
Intelligent Optimization
Gradient descent algorithm with three intensity levels - Gentle, Moderate, or Aggressive. Baseline-reset system ensures predictable, undoable results every time.
Real-Time Feedback
Contextual blend feedback shows what your recipe needs. See predicted quality changes before adding each oil, with fit scores ranking the best options.
Blend History
Save your experimental blends and revisit them later. Convert any blend directly into a full recipe with one tap when you're ready to commit.
Smart Feedback Toasts
After each optimization, get clear explanations of what changed and why. If optimization was limited, see exactly which constraints were hit.
Batch Tracking That Grows With You
Two distinct experiences designed for different skill levels and needs.
Beginner Mode
7-phase guided workflow with educational content
- 1 Preparation
- 2 Lye Solution
- 3 Melt Oils
- 4 Check Temperatures
- 5 Mixing
- 6 Molding
- 7 Curing
- Educational content at each step
- Safety reminders and lye handling guidance
- Built-in timers with push notifications
- Ingredient and requirements checklists
- Photo prompts to document your batch
Advanced Mode
3-stage streamlined workflow
- 1 Preparation & Mixing
- 2 Molding
- 3 Curing & Finishing
- All 7 beginner steps, condensed into 3 stages
- Multiple simultaneous timers
- Jump between stages freely
- Photo documentation at each stage
Smart Inventory Management
Track every oil, butter, fragrance, and additive. Know what you have, what you need, and what it costs.
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Stock Tracking Monitor quantities with low-stock warnings
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Recipe Intelligence See which recipes you can make, which need one ingredient, and what to buy next
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Shopping Integration Build shopping lists from recipes, track costs at purchase, and auto-restock inventory
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Supplier Directory Browse 44 pre-loaded suppliers with websites and contact info
iCloud Sync
Your recipes, inventory, and batch history are backed up to iCloud automatically. Works offline too — changes sync when you reconnect.
Ready to Create Your
Perfect Soap?
Join soap makers who trust Soaper for precision, guidance, and beautiful results.
