# Why are my strokes gained numbers negative? > Canonical: https://pinflag.io/answers/benchmarks-and-lenses/why-are-my-strokes-gained-numbers-negative Because the Tour lens compares every shot with a tour field, and nearly every amateur shot loses a little to that average: on the benchmark model a 15 handicap sits about 16 strokes a round behind it. That is the scale working. Switch to a handicap lens and the same round reads near zero, with the gains and losses in the places that separate you from your own level. Topic: Benchmarks and lenses, https://pinflag.io/answers/benchmarks-and-lenses ## 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.