Sea Info Map -Tides,Fishing
Tide charts & marine weather
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
Offline tide prediction from harmonic constants: high/low tides, spring/neap, plus sea temp, currents, waves & chlorophyll — the marine picture in one map pin.
Sea Info Map brings tides, weather, ocean and astronomy together in a single map pin — built for working on and around the water.
■ Offline tide graph
High-accuracy tide prediction runs entirely on your device, using official harmonic constants. Even offshore with no signal, see high/low tide times, spring/neap tides, and the continuous tide curve. Covers 239 reference ports across Japan.
■ Map overlays (heat-map layers)
Overlay sea surface temperature (SST), chlorophyll-a (a fishing-ground / tide-line indicator), significant wave height and ocean currents as colour layers on the map. Temperature fronts (tide lines) and strong-current bands such as the Kuroshio stand out at a glance. SST uses the latest ~5 km gap-free data and is shown from launch. Wave and current layers are forecast-aware and animate with the time slider.
■ Wind
Wind arrows show where the wind is blowing (direction + speed), so you can read wind direction and strength at a glance. Forecast-aware and synced to the time slider.
■ Charts & base map
Satellite / standard base maps with OpenSeaMap nautical marks (lighthouses, buoys, navigation aids, depth marks) overlaid. The day/night terminator is shown too.
■ Point data (tap to read)
Temperature, wind speed/direction, pressure, precipitation chance, UV index and conditions; SST, currents, wave height, chlorophyll-a and depth. Also an estimate of how pressure (inverse barometer) and wind (set-up) may raise/lower the actual water level, plus a heat-stress (heatstroke) alert.
■ Astronomy (offline)
Sunrise/sunset, moonrise/moonset and moon phase — handy for night fishing and night work.
■ Time slider
Drag the date/time slider at the bottom and the tide curve, weather, ocean data and map overlays (forecast, up to ~10 days ahead) update together on the map — from the past into the future.
■ Favourites & CSV export
Save your go-to spots and export tide (high/low), weather and ocean data to CSV for reports and records.
■ Made for
- Fishing (shore, boat, breakwater)
- Fisheries and aquaculture
- Marine construction, harbour work, diving operations
- Diving and marine leisure
- Operating small craft
Note: data in this app is a planning/leisure reference only and is not a substitute for official nautical charts or tide tables. Use official sources for navigation and safety.
Tide data: Japan Meteorological Agency (https://www.data.jma.go.jp/)
Ocean data: NOAA CoastWatch, E.U. Copernicus Marine Service Information (DOI: 10.48670/moi-00017)
Maps: Mapbox / OpenStreetMap / OpenSeaMap
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
Bug fix: Resolved an issue where some features could remain locked after a purchase / subscription started when a network delay occurred.
The developer, QAEE CONPUUTENG, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Location
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- QAEE CONPUUTENG, INC.
- Size
- 69.2 MB
- Category
- Business
- Compatibility
Requires iOS 14.0 or later.
- iPhone
Requires iOS 14.0 or later. - iPad
Requires iPadOS 14.0 or later. - iPod touch
Requires iOS 14.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 2 more
- English, Japanese, Spanish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Sun Map Clock Yearly $150.00
- Sea Info Map Monthly $15.00
- Copyright
- © 2026 qconp