Gyral Tides
Worldwide tides and currents
Free · Designed for iPad. Not verified for macOS.
Global ocean currents now animate on the map (Copernicus Marine) — plus tide predictions for thousands of stations worldwide, computed on your device, no signal needed.
Gyral Tides is a fun, map-based app for seeing what's going on near or on the water — tide predictions for coastlines worldwide, plus global ocean currents animated right on the map.
The map is the centerpiece — and it's alive. Wind streams across the surface, waves roll through at the real local period and direction, and tide stations glow with the state of the tide.
WHAT YOU CAN DO • Tides — the water level right now, not just the next high and low. Computed on your device from published harmonic constituents, so you can jump to any day, past or future. Charts, high/low times, and a 7-day forecast for thousands of stations, from Puget Sound to Tokyo Bay, the English Channel, and New Zealand. • Currents — worldwide ocean currents animated on the map, modeled by the E.U. Copernicus Marine Service. Speed and direction predictions at NOAA current stations (US), computed the same way as tides. • Weather — current conditions, hourly forecast, marine-zone forecasts, and marine-warning alerts with optional notifications. • Wind & waves — animated overlays you can actually enjoy watching. • Buoys — live offshore observations from NOAA buoys, right on the map. • Astronomy — sun and moon rise/set, phase, and altitude charts. • Search — jump to a station, a buoy, a beach, a surf break, or a harbor. • Widgets — the next tide on your home screen, per-widget station choice.
WHERE THE DATA COMES FROM • Tides: thousands of harmonic stations worldwide, each with its own local time and its own chart datum. • Currents: worldwide surface currents from the E.U. Copernicus Marine Service; NOAA current stations (US). • Buoys and marine-zone forecasts and warnings: United States (NOAA). • Weather, wind, and waves: worldwide.
BUILT TO BE PLEASANT • No signal needed for tides — predictions are computed on your device, not fetched. (Map tiles, weather, buoys, and the currents overlay still need a connection.) • Light, Dark, and System appearance. • Your units, everywhere: distance, wind, temperature, tide height, pressure, and time format. • Accessible: VoiceOver, Dynamic Type, and reduced motion. • Private by design: no accounts, no ads, no tracking, and anonymous usage stats you can switch off.
Gyral Tides is for information and enjoyment only — it is NOT a navigation tool and no substitute for professional marine navigation. It's for the joy of watching the water.
Ratings & Reviews
Ocean currents go global. Modeled surface currents from the E.U. Copernicus Marine Service now animate across the map worldwide, not just in US waters. Wind and wave animations have been retuned for a smoother, more realistic look. The map legend is now a simple tile grid, and Voice Control can now select search results and open every section.
The developer, Gyral LLC, 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:
- Location
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Gyral LLC
- Size
- 18.3 MB
- Category
- Weather
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Gyral LLC