The number is the proof. Log a test every 2 weeks and watch the climb — clubhead & ball speed lead, the athletic markers show why.
Most golfers start here with no launch monitor and no numbers. That's fine — speed gets built, not bought. Tell me what you're chasing, what's been in the way, and what "worth it" looks like. Numbers can come later.
Saved here means saved on this device only. A browser isn't a vault — Safari can clear a site's data after 7 days without a visit. Get it to Coach and it's on record.
Excel schema — one row per test date, columns:
Test Date Clubhead_mph Ball_mph Smash
Carry_yds BroadJump_in KBSwing_lb Sprint10yd_sec MedballThrow_ft.
Round-trips: export → analyze in Excel → re-import the same file to sync edits back.