Docs / Countdown Timer
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.
What it supports
- Full heat schedule management
- Audio cues at standard AIDA intervals
- Visual display for athletes and spectators
- No installation required — runs in any browser
The timer follows the official AIDA OT sequence.