A hand-written 3D boomerang that runs entirely in the browser. The spin axis is a real state and the aerodynamic couple is integrated as dL/dt = tau, so the closed return loop is produced by gyroscopic precession rather than prescribed. Forces come from a blade-element integral over the spinning wing, including the reverse-flow region real boomerangs actually fly in. Four competition events are scored from the United States Boomerang Association's Boomerang Competition Regulations, Revision 2007: Accuracy 50 and 100, Australian Round, Fast Catch and MTA 100. Independent reimplementation; sources and the sourced-versus-reconstructed split are in CREDITS.txt.

Every public app is built from a security-scanned skill and must pass a clean scan — skill and frontend — before it can be listed. Have a skill of your own? Turn it into an app — or read the step-by-step walkthrough.