The Golf Scope app works the same way as a physical non-laser golf scope, except that you have one less thing to carry. By using the built-in iPhone camera, Golf Scope lets you quickly estimate the distance to determine the correct club to execute a shot or clear a hazard.

It is ideal for beginner and casual golfers. Serious golfers should get a laser golf scope.

A quick tutorial:
-- When the app starts up, it goes directly into the live camera view. Pinch with two fingers to zoom in.
-- Have the golf flag roughly in the center, tap camera button. Golf Scope freezes the image (by taking a snapshot), automatically zoom into the maximum, and increase the contrast so it is easier to see.
-- With the frozen image, use single finger to drag and align the bottom of the scale to the bottom of the flag. The tip of the flag indicates the distance.

It is to some extend, better than physical non-laser scope:
-- Easier to have a fix on the flag. You only need to roughly have the flag in the center to freeze the image.
-- One less thing to carry.
-- Costs less.
-- More flexible. Works with both regular golf flag and short practice flag. Supports both yards and meters.

Accuracy
-- At 150 yards/meters, +/- 10 yards/meters.
-- At 100 yards/meters, +/- 3 yards/meters.
-- At 50 yards/meters, +/- 1 yard/meter.