FourSix Coffee Timer is a free iPhone app developed by Jonathan Duenas in the Lifestyle category, specifically in the Food & Drink subcategory. It aims to simplify the process of brewing pour over coffee, which can often be complicated and overwhelming.

The app functions as a calculator and timer, designed to guide users through the pour over method. It follows the 4:6 method invented by Tetsu Kasuya and creates a custom pulse pour recipe based on two simple questions: whether the user prefers a sweeter or brighter coffee, and how strong they like their coffee. By answering these questions, the app generates a recipe that breaks down each pulse-pour and illustrates their impact on the final cup.

To use FourSix, users will need a Hario V60 and a scale that measures in grams. Additional tools such as a pouring kettle with a narrow spout and a thermometer to test water temperature can also be helpful.

For users who want more control over their recipe, FourSix Pro offers additional settings through a one-time, in-app purchase. This allows users to fine-tune their brew to their exact preferences while supporting future development and new features.

With FourSix Coffee Timer, brewing pour over coffee becomes an accessible and enjoyable experience, even for those who haven't had their morning coffee yet.