Knot/Knop Meter

KnotMeter turns your iPhone into a precise GPS speedometer for your boat, no extra hardware, no subscriptions. Open it, head out on the water, and see exactly how fast you're going in knots. Whether you're chasing a personal best, comparing boats with friends, or just curious what your hull can really do, KnotMeter measures it and remembers it. MEASURE YOUR SPEED • Real-time speed in knots (SOG) straight from GPS • Live session max and average speed • Four speedometer styles: dial, fixed 0–100, digital and bar • Color heats up from yellow to red the faster you go • GPS quality indicator so you know the reading is solid MORE THAN A SPEEDO • G-force meter, like a sports car • Live compass heading • Wind speed, direction and gusts • Every run auto-saves with location, heading, wind and peak G GLOBAL LEADERBOARD • See the fastest boats in the world and in your country • Filter by country, boat size, fuel (petrol/diesel/electric) and year • The all-time champion shines at the top • Add your boat with a photo, brand, model and engine details BUILT FOR THE WATER • Keeps measuring with the screen off or the phone stowed • Water-only, it won't count speed from a car or a plane • iCloud sync: your boats and runs follow you to a new device • Sign in with Apple • Dark and light themes • Free Download KnotMeter, hit the throttle, and find out how fast you really are.