Rokey and Eric, two coffee enthusiasts, built BeanBook, an iOS app designed to simplify coffee tracking. Frustrated with disorganized coffee data, they created a tool that uses AI to automatically detect bean information from photos of bags, extract recipes from photos or YouTube links, and log brew details. BeanBook aims to capture the "flavor, emotion, and aesthetic" of coffee, providing a sensory-first experience. The Hacker News community had mixed reactions. Some questioned the app's emotional claims, while others praised the design. Users inquired about its benefits compared to open-source alternatives like Beanconqueror, which Rokey addressed by highlighting BeanBook's focus on simplicity and user experience for casual coffee lovers, offering a "beautifully illustrated notebook" approach compared to Beanconqueror's "cockpit for pros." Users also requested features like gear integration and Android support, both of which are on BeanBook's roadmap. The developers mentioned using AI to refine their communication due to English not being their native language and utilizing Gemini for AI tasks.