The Headset App is a software-first pitch communication system and coach communication system that delivers fast, private calls without radios. Teams deploy on iOS/Android and optional wearables for sub-second delivery in typical field conditions. Role-based controls (talk vs listen-only) reduce chatter and keep players focused, while encryption protects calls from interception. Most programs start in practice to standardize terminology and confirm latency on their fields, then roll into game-day configurations aligned with local rules. Set up in minutes; onboard assistants and volunteers quickly; manage channels, permissions, and devices from a simple admin view. Built for baseball/softball (dugout-to-mound) and football (sideline coach comms), and flexible for other sports and teams.