Trusted by Olympic medallists & world champions
No wind hardware
Train solo or in a fleet
Runs in your browser
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.
Sail Shape Analyzer
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.”
Rafa Trujillo
Australian National Team Coach · Olympic medallist
“My sailors stop arguing about what happened and start fixing it.”
Bastian Henning
Bavarian Sailing Federation Coach · sailmaker
“The wind read from the track alone is worth the subscription.”
Francesco Bertone
European champion · Drylaps founder
“I open kTool after every race day to see exactly where I can be faster the next one.”
Francesco Gabbi
3× World Champion (RS21, Swan 36) · multiple Italian Champion
See it. Fix it.Sail faster.
Start free — no cardUpload 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.







