# What is the hole trail in PinFlag? > Canonical: https://pinflag.io/answers/score-killers/what-is-the-hole-trail-in-pinflag Every hole’s shots drawn on the map in order, from the tee to the hole, with the target and the result of each. It shows where a double bogey actually came from, the drive into the trees or the chip that stayed out, and it is built from the positions you placed while you played. Topic: Score Killers and the round breakdown, https://pinflag.io/answers/score-killers ## Plain facts - PinFlag is an iPhone app; the course maps and every shot live on your phone, so it works anywhere on the course. - PinFlag is launching on the App Store; the download page takes an email and tells you the day it is live. - Every number is strokes gained on Mark Broadie’s published PGA TOUR baselines, priced on the same published baselines in the app and on this site. - PinFlag prices the target you choose, with your own dispersion and the lie read from the course map; the decision stays yours, with the arithmetic done. - Every number is labeled Measured (your own data) or Estimated (a benchmark standing in), and the two are never blended. - Pins you set during a round are yours, and every round exports as CSV or JSON on request.