GROLF

Pebble Beach Golf Links — 18th
Par 5 · 543 yards

Uses your phone's motion sensors to measure your swing. Everything stays on this device — nothing is uploaded, ever.

How to swing

Grip it like the top of a club. Both hands wrapped around the phone, top edge pointing down at the ball, screen facing away from you.
Press and hold. Put a thumb or finger anywhere on the glass. You'll hear two rising notes — that's the swing armed.
Keep holding all the way through. The touch is your grip check: let go and the swing is cancelled. Swing when you're ready — there's no countdown.
Swing smooth, not hard. A controlled three-quarter swing is full power. Swinging harder gains you nothing.
Listen, don't look. The screen faces away from you on purpose. You'll hear the strike, and a duller sound if you caught it badly.

Give yourself room, and hold on tight — a strap is a genuinely good idea. Keep clear of people, pets, lamps and televisions.

GROLF needs your phone's motion sensors to read your swing. Tap below, then choose Allow.

18 · PAR 5

STROKE 1

TEE 543yds to pin

Clean lie. Full swing available.

Wind: calm

0°AIM

PRESS & HOLD

Anywhere on the screen

Nice strike

STROKE 1

18 ft

Drag back from the ball and release to putt

Take three comfortable swings. That becomes your 100% — you never need to swing harder.

Full-swing speed Shot-shape sensitivity Mishit severity Motion putting swing the phone to putt instead of dragging

No swing recorded yet.

Angular velocity of your last swing. Markers show where the backswing, top, and impact were detected.