
潮時刻: Japan Tide Chart & Times
Fishing, Surf & SUP Planner
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About
A simple tide graph for the Japanese coast. Pick a port, drag along the curve, and read the tide level at any time of day.
It covers about 150 observation points in Japan only; it does not show tides for other countries.
WHAT YOU GET
• A tide graph for the day: drag your finger along it to read the level at any time
• High and low tide times in a list, with the tide name (spring, neap) and the moon age
• About 150 observation points along the Japanese coast; pick one, or let your location choose the nearest
• A calendar to choose any date and plan ahead
• Calculated on the device from harmonic constants, so it works without a connection
WHEN IT HELPS
Fishing from a breakwater or rocky shore, surfing and bodyboarding, SUP and kayaking, tide pooling with kids, beach camping, and boating along the Japanese coast.
Note: values are estimates calculated from harmonic constants and can differ from actual conditions because of weather, currents and terrain. Take care near the water. Only the Japanese coast is covered.
The app's interface is in Japanese.
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What's New in 潮時刻
1.1
October 12, 2026
Updated the App Store description to make the app's features easier to find.


