doppler.golf
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GSPro forgets every session.
Close GSPro and your range session is gone — no history, no trends, no
answer to "why did my 7-iron lose eight yards this month." Doppler Golf is a
tiny relay that sits between your launch monitor connector and GSPro,
changes nothing about your game, and keeps every shot.
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How it works
How it works
Create an account and grab your device token.
Run the relay on your sim PC. Point your connector at port 9210 instead of 921. That's the whole setup.
Play GSPro exactly as you do now. Every shot lands in your ledger: club, ball speed, launch, spin — plus session history that survives.
Built to be trusted
Zero interference. The relay forwards every byte untouched, before any logging happens. A logging bug can't affect your game.Your data is yours. One-click CSV export of everything, anytime. Delete your account, data goes with it.Honest numbers. Your launch monitor's measurements are shown as-is. Carry and offline are our flight-model estimates and always labelled est. Open source. The relay is a single Python file on GitHub — read it before you run it, or build the exe yourself.Free. Session history is free. Deeper analytics (strokes gained, dispersion, trends) come later — if enough of you want them.