KnotNow is the water sport analysis app for wing foilers, windsurfers and sailors who want to understand what happened on the water - not just where they went.

Whether you are training for a podium, racing your peers or learning to foil, KnotNow helps you improve after every session.

Join a growing community of windsurfers, sailors, and foilers pushing their limits with Elite Level Analytics.

Sessions: Deep-Dive Analytics
Dig into your activity dashboard with precise analysis and performance achievements. Tap dedicated tabs for Speed, Legs, Turns and Up/Down to analyse how you sailed or winged:
Velocity Made Good (VMG): Optimise your angles and efficiency.
Exit recovery times: See how much speed you carry through gybes and tacks.
Upwind pointing: Analyse your angles against the wind.
Individual leg details: Break down your session piece by piece.
Foiling Metrics: Track foiling time and distance as well as beginner-friendly "Walk of Shame" stats.
Precise wind settings: Customise your session's wind in 10-minute intervals.

Record. your session in the app
Leave the guesswork on the beach. Start a live GPS session from the app and use essential on-the-water tools:
Use the integrated race countdown timer for perfect starts.

Logbook: Track Your Progress
Watch your skills improve over time. Your digital logbook keeps your data organised so you can review your history, track personal bests, manage your race logbook and see where you rank on leaderboards.

Forecasts: UK Spot Data
Plan your next session with confidence. Get UK spot forecasts tailored specifically for winging and sailing locations, including:
Detailed wind and tide tables.
Water quality alerts and information where available.