Homebrewing Lab

Homebrewing Lab is a complete brew-day companion for craft beer homebrewers. Build recipes, run accurate brewing calculations, track fermentation, and log every batch — all in one offline-first app. **RECIPE BUILDER** • Build extract, partial-mash, and all-grain recipes • Add fermentables, hops, and yeast with weight, alpha acids, and timing • Set target OG, FG, ABV, IBU, SRM, mash efficiency • Brewer notes per batch • Edit, archive, and reopen anytime • Export a clean PDF recipe sheet (Pro) **8 BREWING CALCULATORS** • ABV — simple and advanced corrected formulas • IBU — full Tinseth utilization with boil-gravity correction • SRM Color — Morey equation with MCU and color preview • Mash Temp & Strike Water — accurate strike temperature from grain temp, target mash temp, and water-to-grain ratio • Strike Water Volume — quart and gallon outputs • Yeast Pitch Rate — cells needed for ale, lager, and high-gravity ale • Water Chemistry — real greedy salt solver for Ca, Mg, Na, SO₄, Cl using gypsum, calcium chloride, Epsom salt, and table salt • Carbonation — priming sugar weight for corn sugar, table sugar, or DME at any target volumes of CO₂ **BJCP 2021 STYLE GUIDE** • 50 BJCP 2021 styles built in • Searchable by name, category, or commercial example • Full stats per style: ABV, IBU, SRM, OG, FG ranges • Plain-English description and commercial examples • Use it side-by-side with the recipe builder to dial in your style **FERMENTATION LOG** • Log gravity, temperature, and notes per reading • Visual chart of gravity over time • Compare batches and spot stuck fermentation early **TASTING JOURNAL** • Per-recipe tasting notes: appearance, aroma, flavor, mouthfeel, overall impression • Star rating and cost-per-batch tracking • Build a tasting history for every brew you make **BREW-DAY TIMER** • Multi-stage timer for mash, boil, hop additions, and whirlpool • Stays on the screen so you never miss a hop addition **PREMIUM UPGRADE (one-time purchase)** • Remove all ads • Unlock PDF recipe export • Unlimited fermentation log history (free shows last 30 days) • Support ongoing development **OFFLINE-FIRST** All recipes, logs, and journal entries are stored locally on your device. No account required. No cloud lock-in. **MONETIZATION** The free version is fully usable and includes ads. Upgrade to Pro to remove ads and unlock PDF export. **DISCLAIMER** Homebrewing Lab is an independent third-party tool for adult homebrewers. It is NOT affiliated with, endorsed by, or operated by the Beer Judge Certification Program (BJCP) or any commercial brewery. BJCP style data is sourced from the publicly published BJCP 2021 Style Guidelines (https://www.bjcp.org/style/2021/). All brewing calculations are estimates — always verify with measurements and use your own judgment when brewing. Comply with all local laws regarding homebrewing. **CONTACT** Support: dev@corithmflowmatrix.com Privacy: https://playstoreapps.corithmflowmatrix.com/homebrewing-lab/privacy_policy.html Terms: https://playstoreapps.corithmflowmatrix.com/homebrewing-lab/terms_of_service.html Delete account / data: https://playstoreapps.corithmflowmatrix.com/homebrewing-lab/delete_account.html