Brew Science: Coffee Toolkit

Brew Science puts the tools for grinding, brewing and tasting in one app. No account, no ads; the core tools work without a network connection.

◆ Brew a Cup Pick pour-over, French press, AeroPress or espresso, choose a recipe, then weigh, pour and time it step by step. After the cup, say what's off and get a fix for the next one.

◆ Scan a bean bag, log it automatically Point the camera at a bag: roaster, origin, process, variety, altitude and flavor notes fill themselves in. Recognition runs entirely on-device; photos are never uploaded. Paper tasting cards from cafés scan straight into a tasting card too.

◆ Brew Calculator Ratio and water planning, a brewing control chart, and extraction yield for cold-brew concentrate.

◆ Espresso Dial-in Yield and a typical time window from your dose and ratio, with symptom-based fixes for over- and under-extraction. Includes attributed CORE long-extraction protocols; save your own versions.

◆ Grinder Match Pick two grinders; change either side and the other converts automatically (micron-interval based). 8 popular grinders free; Pro unlocks all 121.

◆ Curated Recipes & Staged Timers Staged pour timers that pour with you — progress lives in the Dynamic Island and on the Lock Screen. Save your own recipes too.

◆ Water Lab Four target water profiles plus your own recipes, with GH/KH conversion; mineral data for 135 bottled waters.

◆ Grind Size Reference & Photo Measurement Photo-based D10/D50/D90 measurement against a calibration object, with the full distribution curve.

◆ Bean Cellar & Resting Log each bag's roast info; resting and peak-flavor windows estimated automatically (guidance) — or set your own dates. Archive a bag when it's finished and search it any time. Widgets show which bag to drink today and how many days it has left, on the Home Screen, the Lock Screen and full screen on iOS 27 (Pro).

◆ Tasting Cards Pick flavors on the wheel and the card is made: 8 styles, optional cupping scores, a bag's details in one tap. Save to Photos or share.

◆ Brew Rescue Something off with this cup? Pick a symptom, get a diagnosis path.

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