タイドグラフBI is a free iPhone app developed by B.Creation Inc. under the Lifestyle category and Weather subcategory. This app provides accurate tide charts (潮見表) for 3,000 fishing locations across Japan, with additional data on tide, weather, temperature, rainfall, wind direction, wind speed, wave height, air pressure, water temperature, and old lunar calendar. This app is not limited to fishing, but it also helps surfers, divers, and clammers.

The app displays all the essential information needed for fishing on a single screen, including tide charts, tide-related information, wind direction, wind speed, wave height, air pressure, water temperature, old lunar calendar, and weather forecast. It also features a unique "BI (爆釣指数)" that quantifies the ease of catching fish based on past catch data and natural conditions. With this app, you can determine the best time to go fishing and enjoy a safe and fun fishing experience. However, the app is not suitable for navigation purposes.