TrueLine Golf turns your iPhone and Apple Watch into a real caddie for the courses you actually play — not a demo course, the real one, downloaded and ready offline.
It pulls surveyed layouts from open map data worldwide: real holes, greens, bunkers, water and tees. Arrive at a course and TrueLine finds it automatically, then stores it offline so you're never hunting for signal mid-round.
The rangefinder gives live front, middle and back yardages that update as you walk the fairway. Plays-like distances factor in wind, temperature, humidity and turf firmness, then call a club based on your own numbers, not generic averages.
Upgrade to Pro and every green becomes a 3D model with a solved putt break line, a start point and a holing pace, right on your phone or your wrist. The Apple Watch companion keeps yardages, the putt read and tap-to-hole scoring on your arm the whole round.
Every round feeds a real strokes gained breakdown — off the tee, approach, around the green, putting — rolling up into a live handicap index you can trust. Run it with your regular group using friends, leagues, brackets and payout tracking.
Be clear on one thing: TrueLine's numbers are guidance for how you play, not a substitute for the Rules of Golf or official distance measuring device policies in competition. Use your judgment, and check your event's local rules.
Free tier gets you the rangefinder, scorecard, strokes gained and 2 saved courses. TrueLine Pro, monthly with a 7-day free trial, unlocks 3D green reads, Apple Watch, the swing lab and unlimited courses worldwide.
Download TrueLine Golf and start playing your home course with tour-level information — offline, worldwide, built for the way you actually golf.
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