# PinFlag vs Arccos: what is the difference? > Canonical: https://pinflag.io/answers/compare/pinflag-vs-arccos-what-is-the-difference Arccos captures shots automatically from sensors you buy and reports strokes gained after the round. PinFlag needs no hardware, prices any target before you swing with your own dispersion and the lie read from the course map, draws your real pattern on the hole with Shot Cloud, logs a shot in two taps, and works with no signal. Arccos tells you what happened; PinFlag tells you what the shot in front of you is worth. Topic: PinFlag compared, https://pinflag.io/answers/compare ## 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.