VMGwatch

Your VMG, upwind and down, on your wrist.

VMG watch is a sailing instrument for Apple Watch, with an iPhone app to look back. Speed, VMG and your angle to the wind in numbers you can read in full sun — and every leg worked out after the race.

See what it does Coming to the App Store
VMG ▲ upwind
14.3kn
VMG ▼ downwind
21.0kn

Built for the race course, not the gym

Made by a formula kite racer for windward-leeward racing, and for anyone who sails to a wind: kites, wings, windsurfers and boats.

On the water

Numbers you can read

Speed over ground, VMG and your angle to the wind, huge and heavy on black — green when you work to windward, red to leeward. Readable through polarized sunglasses, at a glance.

Runs under Water Lock: the crown and the buttons are the controls.

Before the gun

The start, eyes-free

One press of the Action Button starts the session and the countdown; every press syncs it. Voice and haptics count you down to the gun without a look at the watch.

The countdown needs an Apple Watch Ultra.

After the race

Every leg, worked out

The iPhone draws your route in green and red and splits it into legs, each with its own VMG, angle and speed — not just one average for the race.

Each Apple Watch session is saved to Apple Health and Fitness with its route.

A real session in the iPhone app: 55 minutes of formula kite racing off Pirita, Tallinn, on 27 September — the route on the map in green upwind and red downwind legs, and below it the table of legs with VMG, angle, speed and time
A real session: 55 minutes off Pirita, 27 September.
The iPhone app

Your race, leg by leg

Open a session and the route is on the map, each leg in the color of its side of the wind. Under it, every leg in a row: its VMG, its angle to the wind, its speed and its time, the best one marked.

The wind comes from the forecast at the start, or is worked out from your legs when it shifted.

What it needs

An Apple Watch with watchOS 26 and an iPhone with iOS 26. The countdown needs the Action Button of an Apple Watch Ultra; on other Apple Watch models VMG watch tracks, shows VMG and analyzes, without the countdown.

What it keeps

Your sessions stay on your devices and in Apple Health. No account, no ads, no analytics. The privacy policy says exactly what leaves your devices.

VMG watch is not a navigation or safety aid. Before you race with it, check what your class rules allow.