Buio is a lifestyle app designed by Bathymatrix Inc. for iPhone users, offering personalized surf forecasting capabilities. The app allows users to relive their best surfing sessions by providing detailed information on wave size, swell direction, wind conditions, and tides. By keeping track of sessions, users can rate and document their experiences, creating a personal surf journal.

Buio stands out by saving users' sessions on their phones, analyzing their preferences, and suggesting ideal spots for future surfing sessions. With its ability to learn from user ratings, Buio aims to enhance the surfing experience by ensuring users catch the best waves at their preferred locations.