Synchro Messenger is a specialized Chrome add-on designed to facilitate real-time communication during artistic swimming competitions. It allows competition coordinators to send full-screen overlay messages to poolside Chromebooks and other Chrome browsers connected to the same local network. This tool enhances coordination by ensuring that critical information is communicated effectively without relying on internet connectivity. The setup process is straightforward, requiring only the installation of the extension and configuration of devices as senders or receivers.

Key features include a dismissable full-screen overlay for messages that ensures visibility amidst the competition, the ability to target specific devices or broadcast messages to all receivers, and priority settings for normal and urgent messages with distinct audio alerts. Additionally, it features a live dashboard for monitoring device status, an activity log for message resending, and automatic reconnection capabilities. This tool is tailored for efficient communication on competition day, making it an essential addition for event coordinators.