How the Countdown Timer Works

The official AIDA preparation countdown requires precise audio cues — Official Top, 30 seconds, 10 seconds — delivered consistently across every heat. Existing apps that do this are priced for commercial event companies.

This timer is free. It is designed to connect to a sound system and run a full competition heat sequence without subscriptions, accounts, or hardware costs.

It was built for local club organizers who are also the judge, also the safety diver, and also the person who brought the extension cord from home.