# How does PinFlag measure approach dispersion? > Canonical: https://pinflag.io/answers/better-players/how-does-pinflag-measure-approach-dispersion From the positions you placed: the finish of every approach against the pin, by distance band and by club, reported as best and median proximity, the share inside 15 and 30 feet, the 68 and 95 percent dispersion circles, and lateral and long-short offsets against the line to the hole. Launch monitor sessions add the range pattern beside it, with the two sources kept separate. Topic: PinFlag for single figure golfers, https://pinflag.io/answers/better-players ## 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.