Questions about 4Shor, answered.

4Shor is a precision conditions-forecast app for water sports. It models the open-ocean swell + wind through the nearshore seabed to predict what the wave will look like at your location, then scores it per sport and per ability so you know whether today's conditions match what you can ride.

If you surf, kite, foil, paddleboard, swim, kayak, canoe — or anything in between — and want to know exactly what the conditions will be like for you, 4Shor's for you.

We think so. We have done extensive testing and refinement of the forecast models and conditions scores to provide results you can have confidence in. Every score is a probability, not a promise -- but reading 70+ means the conditions overlap your ability for the time bucket.

Absolutely. Whether you're chasing your first green wave or doing your first kitesurf body drag, 4Shor helps you choose the right place at the right time for your sport and ability. Think of it as a smart local who knows when conditions are mellow enough for learning and when it's time to sit on the sand and watch.

Ten today: Surfing, Windsurfing, Kite Surfing, Kite Foiling, Wing Foiling, E-Foiling, Paddleboarding, Swimming, Kayaking, and Canoeing. Each has its own scoring model -- a good day for an expert surfer is often a "do not go in the water" day for a beginner paddleboarder, so we score every sport separately.

Conditions are objective; whether you should go is subjective to your ability. A clean 4-foot swell is bliss for an intermediate surfer and intimidating for a beginner. 4Shor weights wave height, period, wind, and tide differently per ability level so the score reflects what conditions mean for you, not for some generic surfer.

Pick the level that matches what you can actually ride in committed conditions, not your peak day. Beginner means you want forgiving conditions to learn. Expert means you'll take on heavy days and want the forecast to surface them.

Yes. The score matrix on every location page shows all 10 sports across all 4 ability levels at once -- click any cell to lock that combination as your default for that location. In the app, set a default sport + ability per favourited location.

We cover more than 2,500 locations across Europe -- the most popular breaks and launch locations, with new locations added all the time. If your location isn't covered yet, drop us a line at info@4shor.app and we will add it to the roll-out.

United Kingdom, France, Spain, Portugal, Italy, Netherlands, Belgium, Germany, Denmark, Ireland, and a handful of Mediterranean islands. North America and the rest of the world come post-launch -- each region needs a satellite bathymetry pass + per-location calibration.

Yes. Email info@4shor.app with the location name, coordinates (or just a pin on a map), and what you ride there. We prioritise requests by demand and by how clean a model we can build -- locations with good bathymetric data come online faster.

4Shor combines satellite-derived bathymetry (fancy word for underwater mapping) with advanced wave models, wind data, and tide curves to generate precision, hyper-local forecasts. The seabed shapes every wave that breaks on the location -- getting that shape right is the part most forecasters skip.

Other apps publish open-ocean swell + wind data and expect you to do the location-level analysis yourself. 4Shor goes the extra mile -- we propagate the open-ocean spectrum across the bathymetric mesh, model how waves refract, shoal and break, then score the result for your sport and ability. No other consumer app does this.

10 metre horizontal pixels with ~10 cm vertical resolution out to roughly 40 metres depth. That is the source-of-truth seabed grid every nearshore wave calculation runs against.

Hourly. The boundary spectrum (open-ocean swell + wind) refreshes every hour at every location. The nearshore propagation and scoring re-runs on each refresh.

A 0-100 score that says how well the conditions match the sport + ability combination at that location, at that time. The tiers: 0-20 "Don't Bother", 21-40 Poor, 41-60 Okay, 61-70 Good, 71-80 Very Good, 81-90 Outstanding, 91-100 Epic. The colour ramp matches the same bands.

We calibrate the model against ridden sessions across the whole location fleet -- comparing what the model predicted to what people actually got. The score is a probability, not a guarantee, but reading 70+ at your favourited location means the conditions overlap your ability bucket. Reading 20 means do not go in the water.

Because the conditions in that time bucket actually are going to be bad for your sport at your ability. The score is honest -- it won't tell you to go just because you opened the app. Most often the culprit is wind direction (an offshore-only location facing onshore today) or wave height (too small for surf, too big for SUP). Check the conditions strip on the location page to see why.

Because each sport responds differently to the same conditions. A 25-knot wind that scores 90 for Kite Surfing scores 10 for Paddleboarding -- it's the same wind, but one sport needs it and the other gets blown sideways. The score matrix on every location page lets you compare all 10 sports side-by-side at any time of day.

Free, forever, no account required: today's forecast for every location at 3-hour resolution. Score for every sport at every ability. The score matrix on the location page. The website surface (4shor.app/locations).

7-day hourly forecast, window alerts at your favourited locations, per-sport ability tuning, and session logging. The paid app is the difference between "check the forecast" and "tell me when the next window opens".

Yep. No tricks, no card up front. You get full access for 7 days on us. After that, you can decide if the sessions saved are worth the price of a post-surf burrito.

No, not for the web version. Location pages and the today forecast work without one. The app needs an account to sync favourited locations and ability settings across devices and to manage your subscription.

Free location pages for every modelled location with the current-day forecast at 3-hour buckets, the per-sport per-ability score matrix, conditions detail (wave, wind, tide, period), and nearby locations. Plus the location index, sport hubs, and method explainer.

7-day hourly forecast, window alerts, session logging, and per-location ability tuning. The app is for committed users -- the web surface stays free for casual reads.

No. 4Shor is an informational tool. Ocean and weather conditions are inherently unpredictable, and forecasts are estimates that can be wrong. Always check actual conditions at the beach before entering the water, and never rely solely on any forecast app for safety decisions. Your safety is your responsibility.