GPS analytics for everyone on the water
Turn your GPS tracks into clear performance insight. YSS imports from any device, cleans up the noise automatically, then breaks down your speeds and personal bests, tacks and jibes, VMG, polars and wind — and lets you replay any session on an interactive map or line up side by side with your fleet.
Coming soon to iOS and Android.
All metrics are estimates for training and analysis — not a navigation or race-scoring instrument.
Built for Sailors· Windsurfers· Foilers· Kiters
Track analysis
Every metric that matters, computed for you
Upload a track and YSS does the rest — cleaning the GPS signal and turning raw coordinates into the numbers you actually sail on.
Interactive map replay
Play any session back on an interactive map and watch exactly how it unfolded, point by point.
Polar diagrams
See your boat speed at every wind angle, built automatically from your own tracks.
Top speeds & personal bests
Automatic rankings of your fastest runs over set times and distances — the classic speed benchmarks.
- Automatic GPS clean-up
- Speed · distance · duration
- Tacks & jibes counter
- VMG & maneuver efficiency
- Wind-direction estimation
- Speed histograms
- Leg analysis
- Weather & wind enrichment
Racing
From the start line to the finish
Analyze against a real course, and line your whole fleet up side by side.
Fleet replays
Combine several sailors' tracks from the same time window and area into one synchronized, side-by-side replay. Compare lines, speed and timing across the whole fleet — and because every participant's segment is individually encrypted, removing your participation cryptographically shreds your data for good.
Race course builder
Define your start line, marks, gates and finish, with rounding order, to analyze against a real course.
Automatic mark roundings
YSS detects when and how you rounded each mark and gate along the course.
Group replays
Run replays and races over the tracks members publish to a group or subgroup.
- Race statistics
- Competitions
- Leaderboards
Your library
Get your data in, keep it organized
Bring activities in from any device and keep every session tidy, searchable and safe to edit.
Multi-format import
Upload GPX, FIT and TCX files, or import an activity archive you export from Garmin.
Non-destructive editing
Trim, split and merge tracks freely — every edit is reversible with one-tap rollback to the original.
Season & period stats
Roll up your performance by month, year, all-time, or any custom date range you define.
- Categories & tags
- Unit & theme preferences
- Filter & sort your library
Community
Sail with your crew
Connect with friends, join clubs near you, and follow everyone's latest sessions in one place.
Groups & clubs
Create or join public or invite-only groups, and find clubs near you on the map or by sailing class.
Personal activity feed
One timeline of your friends' latest tracks and posts from your groups, with filters for each.
Friends
Send and accept friend requests and build your own sailing network.
- Class taxonomy — windsurf · foil · kite · dinghy…
- Subgroups
- Post, comment & like
- Profiles
Privacy & sharing
You decide who sees what
Share on your terms — down to the individual track and the exact details a viewer can see.
You own your data
Delete any track or your whole account. Fleet segments are per-participant encrypted, so leaving shreds your data for good.
Per-track privacy
Every track is public, friends-only or private — set a default and override it whenever you like.
Simple, secure sign-in
Register with email and password or sign in with Google; passwords are only ever stored hashed.
- Public share links
- Fine-grained share controls
- Cross-platform iOS & Android
Ready to see your sailing in numbers?
Download YSS and turn your next session into insight.
Coming soon to iOS and Android.