Observed arrival · 2026-11-12
TrueLine measures the bowling shot
An iPhone app uses bowling video to calculate shot metrics, from speed and breakpoint to entry angle.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- iPhone-using bowlers who analyze their shots
- Worth noticing
- The site says video stays on the phone and no account is required.
Field notes
The page shows sample readings such as 18.7 mph speed, a 38.6-foot breakpoint, and a 3.9-degree entry angle. It also describes session views for comparing consistency and stats for seeing where shots enter the pins and which ball finds the pocket most often. The site says analysis runs on the iPhone without an account or video upload.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
$PaidCommerce or pricing visible
◎NicheUnusually specific use
◉HumanPersonal, local, civic, or handmade
One card from the complete issue