# Why golfers trust PinFlag > Canonical: https://pinflag.io/answers/accuracy The numbers come from the framework professional golf uses, and every one says what stands behind it. **How accurate is PinFlag?** PinFlag prices every shot on Mark Broadie’s published PGA TOUR baselines, the same framework the tour uses, at the lie and the distance in front of you rather than a typed guess: the lie is read from the course map, the distance from the pin you placed, and your dispersion from your own launch monitor sessions and logged rounds. Every number carries a Measured or Estimated label so you always know what stands behind it, and the free calculator on pinflag.io prices any shot to the same figure, so a number can be checked without the app. Page: https://pinflag.io/answers/accuracy/how-accurate-is-pinflag **What do Measured and Estimated mean in PinFlag?** Measured means the number is built from your own recorded data: imported carries, logged shots, a pin you placed. Estimated means a benchmark pattern is standing in until your data exists. The label sits on the number itself, the two are never blended, and importing a session or logging rounds moves numbers from Estimated to Measured on their own. Page: https://pinflag.io/answers/accuracy/what-do-measured-and-estimated-mean-in-pinflag **Is strokes gained in PinFlag the same as on the PGA TOUR?** The same framework and the same published baselines. PinFlag uses Mark Broadie’s expected strokes tables, the categories the TOUR reports, and prices each shot in the lie’s own unit, feet on the green and yards elsewhere, so a number in PinFlag means what the same number means on a TOUR stat sheet. Lenses then let you read the same shots against a Scratch or handicap level table. Page: https://pinflag.io/answers/accuracy/is-strokes-gained-in-pinflag-the-same-as-on-the-pga-tour **Why do PinFlag’s numbers match between the phone and the website calculators?** Because they price from the same published tables. Put a lie, a distance and a finish into the strokes gained calculator on pinflag.io and the figure is the figure the app shows for that shot, so anyone can check a PinFlag number in a browser before they trust it on the course. Page: https://pinflag.io/answers/accuracy/why-do-pinflags-numbers-match-between-the-phone-and-the-website-calculators