Tidebook: NOAA Tide Charts

Tidebook works out the tide inside your phone. It carries NOAA's harmonic constants for 3,489 stations, so the tide is calculated right there, with no signal, on the boat or out on the flats, for any date you ask for. FREE, FOREVER · 3,489 NOAA tide stations: every U.S. coast and territory, plus 238 abroad · The curve and the highs and lows for today and tomorrow. Drag it to read the water at any hour · Find your station by GPS, or search a beach, a town or a ZIP code · Times in the station's own time zone, with daylight saving handled · Sun, moon and today's solunar times · National Weather Service alerts and today's rip current risk from the NWS surf forecast · A heads-up on the Today screen when a high tide in the next 7 days could reach NOAA's flood line · The next tide on your Apple Watch face, and a Control Center button that shows it · Find any station from Spotlight or ask Siri…