Apps built
for the water

High-frequency GPS logging records your full track — position, speed over ground, and heading sampled continuously. Every leg and maneuver is captured, so nothing is lost to memory after you come off the water.

Velocity Made Good is computed upwind and downwind against the wind axis, showing exactly how efficiently you're converting boatspeed into progress toward the mark — not just how fast you're going in a straight line.

Each maneuver is automatically detected and scored on entry and exit speed and the distance lost through the turn. Vague feel becomes a repeatable number you can actually train against.

Claude AI reviews each session and returns specific, plain-language feedback on what to fix next — reading your data the way a coach would look over your shoulder, then pointing at the one thing that matters most.

Sessions are stored and compared, so you can see whether a change to technique or setup actually made you faster. Trends replace guesswork, and improvement becomes something you can measure week to week.

Everything runs from the phone in your pocket — no instruments, mounts, or external sensors to buy. Start a session, sail, and review a full performance breakdown the moment you stop.