🎥 Trace beta

Film a shot and let the app track the ball — see what actually happened, not just what you read.

slow-mo works best
Prop your phone down the lane, film one shot, load it here.
How to film
  • Prop the phone behind the approach, looking straight down the lane — it must not move.
  • Slow-mo (120/240 fps) gives the cleanest track; normal video works too.
  • One shot per clip: start just before the release, stop when the ball hits the pins.

Then: tap the 4 lane corners to calibrate → the app tracks the ball → laydown · breakpoint · entry angle · speed on a top-down lane map. Traces save to the same history as Bowl-off and Journal.