Free

A private roast journal for home coffee roasters. Log every batch, auto-compute weight-loss % and development time ratio, and dial in your profiles over time. Everything stays on your device — no account, no cloud.

● Log a roast

Light
Medium
Dark
★★★★★
Weight loss—
Dev. time ratio—
Total roast—

▦ Stats & per-bean averages Pro

⇄ Comparison table Pro

≡ Roast history

0 roasts

📖 Home roasting guides

How to roast coffee at home — pan, popper & dedicated roaster, plus the basic stages. First crack explained — what it is, why it matters, and development after. Roast levels explained — light, medium & dark, and what changes. Coffee roasting weight loss — typical % by roast level, and why it matters. Development time ratio (DTR) — target ranges and how to use it. The roast log app — how RoastLog tracks every batch.