A browser high jump run on World Athletics Technical Rules TR26 and TR27, with an anthropometric segment-mass jumper whose centre of mass is computed rather than assumed. Play a full competition with the real count-back and jump-off, then read the Lab panel: the flop CAN put the centre of mass under the bar, but none of the eleven finalists World Athletics measured in 2018 did.

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.