TrueLine: Bowling Ball Tracker
Speed, hook & entry angle
About
This app transforms your iPhone into a bowling ball motion tracker, providing detailed analytics like speed, hook, and entry angle. Analyze your throws with replays, track trends, and compare your equipment. It's designed for practice and requires no additional hardware.
What's New in TrueLine
1.0
August 24, 2026
Subscriptions & In-App Purchases
$14.99
TrueLine Unlimited
Unlimited analyzed throws, forever.
FAQ
What bowling metrics does TrueLine track?
TrueLine measures ball speed, board at the arrows, launch angle, breakpoint board and distance, entry board and entry angle, total hook in boards, and pocket hits.
How does TrueLine work without extra hardware?
The app uses your iPhone's sensors to track ball motion when placed behind the approach. It requires no additional hardware, making it convenient for practice at any center.
Can I see my past throws with TrueLine?
Yes, TrueLine replays your throw with the tracked path drawn on it. It also displays every line of a session on a single lane view and tracks trends across sessions.
Does TrueLine have ads?
No, TrueLine is ad-free. The app focuses on providing a clean and uninterrupted experience for analyzing your bowling performance.
What is the pricing for TrueLine?
Your first 10 throws are free. A single purchase unlocks TrueLine forever, offering full access to all its features.
Is TrueLine available on Android devices?
Currently, TrueLine is supported on iPhone devices only. It leverages specific iPhone hardware for its ball motion tracking capabilities.
How often is TrueLine updated?
The latest version of TrueLine is 1.0, and it was last updated on August 24, 2026. Updates typically focus on improving tracking accuracy and adding new analysis features.
What is the age rating for TrueLine?
TrueLine has an age rating of 4+. This indicates it is suitable for a wide range of users, including younger bowlers, due to its straightforward functionality and lack of mature content.
