Coffee Calc is a web app for iPhone that helps you make great coffee by getting the brewing ratio just right. Switch between three units of measurement for coffee/water, and if your coffee is too strong or weak, adjust the brewing ratio.
The brewing temperature of water used should be between 195°F (91°C) and 205°F (96°C). Water less than 195°F won’t extract properly, and boiling water (212°F) will burn the coffee.
Contact: feedback@coffeecalc.com