タイドグラフBI / 4,000ヶ所の釣り場に対応した潮見表

Tide Graph BI is a tide table app built for anglers, surfers, divers, and anyone planning ocean activities across Japan. Access pinpoint tide graphs and hyperlocal weather forecasts for 4,000 fishing spots where catches actually happen—all on a single, intuitive screen.

Everything you need appears at once: tide graphs, wind speed and direction, wave height, air pressure, water temperature, rainfall forecasts, and the lunar calendar. Rather than generic regional weather, you get weather data specific to your exact fishing location. This level of detail transforms planning—you can identify optimal conditions hour by hour instead of guessing based on broad forecasts.

The app's signature feature is the BI (Blast Fishing Index), a numerical rating that forecasts how easy fish are to catch. It synthesizes tidal cycles, moon phases, temperature, pressure, wind, and historical catch data to calculate fish-feeding activity for each location and each hour. Higher numbers mean better odds. This eliminates the guesswork that can turn a trip into wasted time.

Real-time rain cloud radar tracks precipitation up to 60 minutes ahead, updating every 10 minutes. You'll spot when light rain arrives—often a feeding trigger—and adjust your timing without leaving the app. Safety alerts for earthquakes, tsunamis, and typhoons display instantly with red badge notifications, so you fish with confidence even in changeable conditions.

The lunar calendar is integrated because moon phases genuinely influence tides and fish behavior. Many experienced anglers time trips around the lunar cycle, and Tide Graph BI makes this calendar visible alongside your tide data so planning becomes seamless.

Design prioritizes readability over clutter. Dense information—pressure graphs, water temperature trends, wind shifts—loads instantly and scans like a glance rather than a search. Smartwatch support via Wear OS and complications puts your top-registered location's tide graph on your wrist, keeping you informed without pulling out your phone.

Tide Graph BI also works for activities beyond fishing: surfers monitor swell and offshore winds; divers check tidal flows and visibility windows; foragers and beachcombers track low-tide timing. Anyone working around ocean rhythms finds value here.

Note: tide and weather data are for planning and reference only, not for navigation. A paid Supporter tier (190 yen/month) unlocks historical and forward tide graphs beyond 30 days, hides ads, extends barometric forecasts to 6 days, and increases your saved locations from 10 to 50.

Tide Graph BI delivers professional-grade tidal and weather intelligence tailored to real fishing locations across Japan.