TrueLine

See what your ball actually did.

Speed, breakpoint and entry angle on every throw, from your iPhone.

Download on the App Store

10 throws free, then $14.99 once.

A real throw, tracked by TrueLine.
  1. 1Set your phone behind the approach.
  2. 2Mark the lane once.
  3. 3Bowl.
Shot result: a top-down lane with the tracked path, the breakpoint and the entry angle
Shot result
Session view: every throw of a session drawn on one lane
Session
Stats: entry boards over time and pocket percentage by ball
Stats
Shot metrics: speed, board at arrows, launch angle, entry board, entry angle, breakpoint and hook
Metrics

Everything runs on your iPhone. No account, and nothing is uploaded.

Download on the App Store

10 throws free, then $14.99 once. Questions?