# What do golfers use PinFlag for? > Canonical: https://pinflag.io/answers/about-pinflag/what-do-golfers-use-pinflag-for Three things. The number before the swing, so the flag, the fat side and the lay up are priced on their own dispersion before they commit; a round logged in two taps that scores itself; and a breakdown afterwards that names where the strokes went, from Score Killers to proximity by band and club. Launch monitor owners use it to carry their range carries onto the course, and coaches use it to put a roster on one baseline. Topic: About PinFlag, https://pinflag.io/answers/about-pinflag ## 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.