Lubber Line

SET YOUR COURSE — LIKE CRUISE CONTROL Point, tap the anchor, and your course is locked. A glowing cyan arc on the ring shows the delta between where you're heading and where you want to be — shrinking to nothing as you come back on course. Nudge ±1° with a tap or ±10° with a hold, exactly like cruise control. No typing, even with your phone bolted to the helm: steer the bow at the target and tap. REAL TRUE NORTH — AND HONEST ABOUT IT Most compass apps ignore magnetic declination. Lubber Line applies the World Magnetic Model for your exact position to show true north — and proves it with a small T/M badge: T when corrected, M when reading magnetic until a fix arrives. In regions where declination reaches 15–20°, that honesty matters. SPEED OVER GROUND IN KNOTS A proper marine instrument cluster: heading, coordinates, and SOG in knots — with a still-gate that pins speed to an honest 0.0 the moment you stop, instead of the three-second GPS fade every other compass shows. COURSE OVER GROUND — SEE YOUR ACTUAL DRIFT Alongside heading, Lubber Line shows Course Over Ground from GPS — the direction you're actually tracking, which can differ from where you're pointed when wind or current pushes you off line. A glance tells you whether you're holding your line or drifting off it. BUTTER-SMOOTH, ALWAYS UPRIGHT The glossy rose glides with adaptive sensor filtering and frame-rate interpolation — Apple-level smoothness — while every letter and numeral stays upright as the card turns. Read it from the helm, the dash, or your hand. NIGHT MODE FOR THE HELM AFTER DARK Switch to a red-on-black display built for low light — the same principle traditional marine instruments use to protect your night vision. Set it to follow your system appearance automatically, or lock it on or off with a single tap of the brass lever switch. WORKS FULLY OFFLINE Heading comes from your device's sensors, position from its GPS hardware. No accounts, no ads, no analytics, no tracking — your position never leaves the device. Landscape mode with large, high-contrast readouts keeps it glanceable on a helm mount, and the screen stays awake while you navigate. Lubber Line is a consumer compass, not a substitute for certified marine navigation equipment.