iPhone · free, with an optional one-off unlock
Tide, sun, wind and water quality for every designated bathing beach in England, including whether there has been a sewage discharge today.
One screen, answering the question you actually have. Is it worth going down there.
The full curve for the day with highs and lows marked, so you can see whether you are catching it on the push or the drop.
The Environment Agency classification and today’s pollution risk forecast. If there is an increased risk of sewage, the app says so plainly.
Sunrise, sunset and where the sun is right now, drawn across the sky. Useful for golden hour, or for working out if you have time for another go.
Wind speed and direction, air temperature and UV, so you know whether it will be pleasant as well as possible.
Surf, paddle, swim or beach. Same conditions, but the app promotes what matters to you. Swell for surfers, depth and sand for a family afternoon.
Tides are worked out on your phone, not fetched. In a cove with one bar, you still get the tide.
Strandline does not licence tide predictions from anyone. The harmonic constants it uses were worked out by analysing real observations from 38 Environment Agency tide gauges. It is the same maths a commercial tide service runs, on data that belongs to the public.
Tide times and water quality are free at every beach, permanently. Nobody should pay to find out whether it is safe for their kids.
One saved beach, the full tide curve, sun, wind and water quality. Genuinely useful on its own, not a demo.
Every beach saved, and a nearby comparison that ranks the beaches around you on conditions right now. One payment, no subscription, restores free on all your devices.
Strandline predicts the astronomical tide. It does not include storm surge, which can shift the real water level by a metre, and each beach borrows predictions from the nearest gauge rather than measuring at the beach itself. It is built for people going in the water for fun. If you are navigating a vessel, use Admiralty data.