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kTool

For sailors

Find the speedyou're missing.

You've been collecting data for years.

kTool turns it into the one thing that makes you faster —

knowing exactly where your speed goes.

Start free — no cardSee how it works

Analyze your own sessions free — or explore a ready-made one to start in seconds.

Trusted by Olympic medallists & world champions

No wind hardware

Train solo or in a fleet

Runs in your browser

kTool maneuvers analyzer showing speed and heel curves

The patterns you miss

You can't fix whatyou can't see.

The tack you never quite accelerate out of. The over-heeling you never feel. The slow first seconds out of every gybe.

kTool shows you the pattern you've been blind to — so your races get faster and your training gets more productive.

Avg. vs. best 25% maneuvers

Race against yourbest self.

Your toughest competition is your own best. kTool takes your sharpest 25% of maneuvers and lines them up against your average. The gap between them? That's free speed, just waiting on consistency.

kTool comparing your best maneuvers against your average
kTool sail shape analyzer turning a sail photo into numbers

Sail Shape Analyzer

Beta

Stop trimming by eye

Snap a photo of your sail and turn it into numbers. Test sails, setups, and tunings. Draw the curve and read the shape — depth, draft position, twist, the rig too. Then overlay two shots or set them side by side, and see exactly what changed: trim to trim, sail to sail, day to day.

Find the shape that's fast, and set it again.

The kTool difference

No wind gear. No setup.kTool infers the wind for you.

Train alone, no instruments, no other boats to line up against? Doesn't matter. kTool works the wind out from the shape of your track — so every tack and gybe gets a real angle the moment you upload.

How it works

From the water to the answer.

01

Upload

Drop in your track after sailing — add wind files or video if you've got them.

02

It's ready

kTool detects your maneuvers and straight lines, infers the wind and syncs your footage.

03

Find it

Put your maneuvers against your best, isolate a leg, focus the segment that mattered.

04

Go faster

Take it back on the water. Stack sessions and watch the gap close, race by race.

The fastest sailors stopped guessing.

I see in five minutes what used to take me half a regatta to feel out.
Portrait of Rafa Trujillo

Rafa Trujillo

Australian National Team Coach · Olympic medallist

My sailors stop arguing about what happened and start fixing it.
Portrait of Bastian Henning

Bastian Henning

Bavarian Sailing Federation Coach · sailmaker

The wind read from the track alone is worth the subscription.
Portrait of Francesco Bertone

Francesco Bertone

European champion · Drylaps founder

I open kTool after every race day to see exactly where I can be faster the next one.
Portrait of Francesco Gabbi

Francesco Gabbi

3× World Champion (RS21, Swan 36) · multiple Italian Champion

See it. Fix it.Sail faster.

Start free — no card

Upload your own session, or explore a ready-made one the moment you sign in.

FAQs

No. kTool lays it out so you can read it yourself — every maneuver, the exact moment your speed dropped, where you lost distance through a tack. Nobody has to interpret it for you. It's your second pair of eyes on every decision you made out there.