Arbiter

Arbiter is a sports officiating reference app that puts rulebooks, mechanics, and game-day tools at your fingertips. Built for referees, umpires, coaches, and serious fans, it delivers fast rules lookup, clear signal guides, and practical checklists to resolve calls with confidence on and off the field. Core features include multi-sport rules search with bookmarks, visual signals and penalty references, and scheduling tools for game assignments. Optimized for quick access and offline use, it is an essential sports officiating app for football, basketball, baseball, soccer, and more. Keywords: sports officiating app, referee rules, rules reference, officiating management, schedule assignments, multi-sport rulebook