The all-in-one toolkit for wing foilers, windsurfers, & sailors.

Built specifically for wind sports. Get precision speed and turn analytics alongside tailored wind, tide, and water quality forecasting.

Download on the App Store

Free until 31st August — download and help us test on the water

The platform

Built for the water,
tailored to you

Session analytics first: tacks, gybes, speed and VMG. When you're checking the forecast, bespoke wind, tide and water-quality ratings for 400+ spots.

New iOS app · Free Pro until September

Track every session — help us test it

KnotNow is on the App Store. Download free and get unrestricted Pro features until 1st September — tacks, gybes, speed, VMG and full debriefs on every session.

Wing foilers, windsurfers and sailors: log your sessions, tell us what works, and help us build the ultimate watersports tracker.

Forecasts

Bespoke ratings for your spots

KnotNow's UK hourly wind forecasts, with tide, swell and water quality customised to your personal “Goldilocks” settings. Tailor what works for the location, your skill level and schedule with live sewage spill info.

Built entirely for wing foilers, windsurfers, and sailors.

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Forecasts

UK hourly wind with tide, swell and water quality — customised to your Goldilocks settings for skill, schedule and spot.

  • Bespoke Epic ratings for 400+ spots
  • Live sewage spill alerts
  • Built for wing foilers, windsurfers & sailors
Explore forecasts →