OLLA Brew Lab: Coffee Roast

Roast curves in your pocket: import from nine formats, log your own, overlay two batches. Plus bean cards, brew logs, cupping sheets, and a fully visual coffee codex.

OLLA is a specialty coffee companion built around bean cards, brew logs, cupping sheets, and a roast workbench — with a structured coffee reference woven through all of it.

Every bag of beans has its own timeline. OLLA turns each one into a record you can return to, compare, and learn from.

ROAST TO CUP — CURVES IN YOUR POCKET Import roast curves from Artisan (JSON, .alog, CSV), Giesen, ROEST, IKAWA, Loring, Kaleido, or any generic CSV — nine formats, detected from the file itself. Log a roast live with large buttons for charge, turning point, yellowing, first crack, and drop; development ratio appears in real time after first crack. Replay any curve, compare three batches, follow a reference roast, and carry the beans through to the cup.

SCAN A BAG, GET A BEAN CARD Photograph the label and OLLA reads origin, variety, process, and roast date on device, then matches them against the built-in reference. Review every field before it is saved. Nothing is uploaded.

BEAN CARDS — YOUR COFFEE RECORDS One card per bag: variety, process, origin, altitude, estate, roast level, roast date, purchase details, and your own notes. Resting and drinking windows count down on their own, so you know when a bag is at its best.

COFFEE CODEX — THE KNOWLEDGE BEHIND YOUR BEANS Explore structured, cross-linked entries covering origins, varieties, processing, roasting, equipment, brewing, and sensory evaluation. Reference cards carry flavour radars, lineage charts, processing flows, roast curves, and grading systems — every figure sourced, and left blank where no reliable source exists.

BREW LOGS AND CUPPING SHEETS Record grind, water temperature, ratio, TDS, extraction yield, timing, and sensory impressions. Score cuppings on the SCA form. Everything links back to the bean it came from.

COFFEE JOURNAL — A REPORT THAT GROWS WITH YOU The journal turns your records into a personal analytical report: brew rhythm heatmaps, flavor DNA, an origins map, a golden-cup chart, a bean ledger, and milestones. Every figure is derived on device from your own records.

TEN TOOLS AROUND THE CORE Brew timer with step recipes, recipe library, ratio calculator, extraction-yield calculator, espresso lab, brewing-water recipes, cupping score sheet, grind guide, roast reader, and a flavor wheel.

WIDGETS, REMINDERS, AND SYNC Home Screen and Lock Screen widgets show the drinking window of a pinned bean, today's ledger, and recent additions. Local reminders tell you when a bag is entering or leaving its peak. iCloud keeps everything in step across your devices.

TRILINGUAL Use OLLA in English, Simplified Chinese, and Japanese, switchable inside the app.

PRIVATE BY DESIGN No sign-up required. No tracking, no ads, no analytics. Bean cards, brews, cuppings, notes, and preferences stay on your device and in your own iCloud. Camera and photo access is requested only when you scan a label, and recognition runs entirely on device.

OLLA is a quiet, practical coffee handbook — a place to keep what you have tasted, and to understand it better.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/