Ratio, Nau: Specialty Coffee

Ratio, Nau is built for people who take coffee seriously. Calculate brew ratios with precision, adjust coffee and water grams, scale recipes automatically, and track variables like method, grind size, temperature, pours, and total brew time.

Create recipes for V60, AeroPress, Chemex, French Press, moka pot, espresso, and more. Save every brew detail, share recipes by link, and keep a clean library of recipes designed to be repeated, compared, and improved.

If you weigh, time, tweak grind size, and chase the exact cup, Ratio, Nau is for you.