# How is a penalty off the tee priced in PinFlag? > Canonical: https://pinflag.io/answers/on-the-tee/how-is-a-penalty-off-the-tee-priced-in-pinflag A penalty is one extra stroke charged to the shot that caused it, priced from where the ball lies after the drop, which is the published method. On a 400 yard hole the tee shot starts at 3.990 expected strokes; a tee shot out of bounds costs 2.05 strokes against a drive to the fairway on the published table, which is the most expensive single mistake in golf, and PinFlag prices it before the ball is in the air. Topic: PinFlag off the tee, https://pinflag.io/answers/on-the-tee ## 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.