A precision brewing companion that calculates everything against YOUR equipment — not generic defaults. Set your equipment profile once (kettle volume, boil-off rate, mash efficiency, system losses), and every recipe, mash calculation, and brew day sheet tailors to your actual setup. For the 1.2M+ US homebrewers tired of generic calculators that do not know their system. ## What's included - **Equipment profile** — kettle size, boil-off rate (gal/hr), mash tun deadspace, mash efficiency (default 72%, calibrate from real batches), hop utilization, end-to-end system losses; profile travels with every recipe - **Recipe builder with real chemistry** — grain bill with extract potential, hop schedule with alpha-acid %, real IBU math (Tinseth), SRM color (Morey), yeast selection with attenuation + temp ranges - **Style-guide alignment** — BJCP 2021 OG/FG/IBU/SRM/ABV ranges; flags when recipe drifts out of style - **Brew day sheet, timestamped, pre-filled** — strike water temp (on grain mass + tun thermal mass), mash + sparge volumes, pre-boil gravity target, hop addition times, chill target, priming sugar by carb-volume target - **Fermentation tracker** — gravity log, apparent attenuation, ABV projection, fermentation temp log, stuck-fermentation diagnosis (temp, pitch rate, fermentables, infection) - **Multi-style support** — beer (all-grain, BIAB, extract, partial mash), wine, mead, cider; conversion math respects each format - **Recipe library with batch history** — every batch saved with OG/FG/ABV achieved, tasting notes, what to change next time; full version history per recipe - **Water chemistry adjuster** — input source water (city report or Ward Labs), target style profile (Burton, Pilsen, Dublin, Munich), get gypsum / calcium chloride / lactic acid in grams - **Competition prep** — generates BJCP-formatted recipe sheets for homebrew competition entry ## Limitations - **Not a brewing controller** — does not interface with RIMS / HERMS / electric kettle controllers (Auber, BrewPi, Grainfather); calculates and logs, you operate the rig - **Not a commercial-brewery scaler** — built for 1-15 gallon batches; commercial brewing (BBL scale) is a different math regime - **Not a beer-style judge** — flags style adherence, does not score; BJCP judging stays human - **Ingredient-cost tracking is bonus, not central** — pairs with Brewer's Friend / BeerSmith for full COGs if needed - **English-first** — US + UK ingredient nomenclature first; metric throughout, but European malt + hop variety database is good not great ## Best fit Homebrewers brewing 6-30 batches/year on a consistent system who want precision results rather than approximations from generic web calculators. Especially valuable for brewers who have just calibrated their mash efficiency and want every future recipe to respect it, and for brewers entering BJCP competitions where style adherence is scored. At $9/mo, one batch saved from a stuck fermentation or off-style miscalc pays for the year.
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