# How does PinFlag help me choose a target? > Canonical: https://pinflag.io/answers/predictive-strokes-gained/how-does-pinflag-help-me-choose-a-target It prices every target you consider, in strokes, before you commit. Put the aim on the flag and read the number; move it to the middle of the green and read it again; move it to the layup and compare. The strokes gained difference between them is the cost of the aggressive line, on your pattern and this lie. You bring the wind and the situation; PinFlag brings the arithmetic, and the decision is better for having both. Topic: Predictive strokes gained in PinFlag, https://pinflag.io/answers/predictive-strokes-gained ## 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.