Soaper - Soap Calculator

Soap Recipe Calculator

Free · In‑App Purchases · Designed for iPad

Soaper turns soap recipe math into tap-and-go simplicity — now on iPhone and iPad. 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 180+ 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. Track active batches, monitor cure progress, and log notes and photos along the way. — 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. Recipe availability shows you which recipes you can make right now with what's in stock. 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. 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

Ratings & Reviews

  • 4.7
    out of 5
    3 Ratings

Now available in 34 languages! All ingredients, descriptions, and interface elements are fully translated. Search works in both your language and English.

Version 1.1.2

The developer, James Braaten II, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Identifiers
    • Usage Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More

The developer indicated that this app supports the following accessibility features. Learn More

  • Supported Features

    • VoiceOver

    • Larger Text

    • Dark Interface

    • Differentiate Without Color Alone

    • Sufficient Contrast

Information

  • Seller
    • James Braaten
  • Size
    • 40.1 MB
  • Category
    • Lifestyle
  • Compatibility
    Requires iOS 18.2 or later.
    • iPhone
      Requires iOS 18.2 or later.
    • iPad
      Requires iPadOS 18.2 or later.
    • Mac
      Requires macOS 15.2 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 2.2 or later.
    • Apple Watch
      Requires watchOS 26.0 or later.
  • Languages
    English and 32 more
    • English, Arabic, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
  • Age Rating
    4+
  • In-App Purchases
    Yes
  • Copyright
    • © 2025-2026 James Braaten II
  • Developer Website
  • Privacy Policy