Cold-process soap calculator 🧮: lye, water, superfat & bar-quality profile.
Dragon Rush 2 is a cold-process soap-making studio for hobbyists and small-batch soapers who want their recipes to be right before they ever reach for the lye.
Build 🔨 a soap formula the way a real soaper does: add base oils and butters, set each one's weight, choose your superfat and water method, and watch 👀 the numbers 🔢 resolve as you work. A genuine saponification engine computes the exact sodium hydroxide (lye) and water your recipe needs, applies your superfat discount, and works out fragrance and additive amounts — the same arithmetic a seasoned soaper does by hand, done ✅ for you as you type.
Every formula is scored against a real fatty-acid model. From the oils you choose, Dragon Rush 2 derives five quality bars — hardness, cleansing, conditioning, bubbly and creamy — plus INS and iodine estimates, and flags a recipe that will turn out too soft or too brittle so you can adjust before you pour.
FEATURES
• Formulation lab — add oils, drag ✋ the superfat and weight sliders, and read live lye, water and fragrance amounts alongside a five-bar quality profile that updates as you go.
• Oil library 📚 — a curated reference of common soaping oils and butters, each with its saponification value, full fatty-acid breakdown 🧾, INS and iodine, shown on a clear profile chart 📊.
• Batch journal — save 💾 any recipe as a batch with notes 📝, attach a photo 📸 of the finished bar, and follow a cure countdown so you always know 💡 when a batch is ready to use.
• Recipe scaler — resize any formula to a mould volume or a bar count, in grams or ounces, with every oil's weight recalculated for you.
• Fresh start 🚀 whenever you want — a full reset control returns everything to a clean 🧼 slate.
A soaping calculator 🧮 is only useful if the math is trustworthy. That is the whole point of Dragon Rush 2: real saponification values, a real fatty-acid quality model, and clear numbers 🔢 you can act on — no accounts, no ads, no clutter.
Always follow safe soaping practice 🏋️: measure 📐 carefully, wear appropriate protection when handling lye, and double-check ✅ your quantities before you begin 🚀.