I built this to solve my own problem — sourdough takes ~20 hours from start to finish, and I was tired of setting a dozen alarms and constantly checking "what's next?" Flour Hour lets you pick a recipe, set your start time (or work backwards from when you want to eat), and it calculates every step with exact timestamps. Includes 22 recipes: classic sourdough, same-day sourdough, focaccia, bagels, croissants, brioche, discard pancakes, and more. Each with ingredients. Tech: React + Vite, deployed on GitHub Pages. The interesting part — I built it entirely by talking to Claude Code. Described what I wanted like a client, and it wrote all the code. Took about 3 hours of conversation (not counting rate limits). GitHub: https://github.com/YaninaTrekhleb/flour-hour Happy to answer questions about the build process or the app itself.