Referee learning app vs FlagLine Offside Lab

Learn the official Laws of the Game with over 1,000 practice questions – completely free and flexible. Whether you're preparing for your referee exam, taking a beginner course, or brushing up as an active referee, this app guides you step by step. What you can expect Over 1,000 questions on football rules, match situations, and rule interpretations Practice by topic – select any topic and start practicing questions immediately Personal bookmarks – save questions to your own bookmarks and practice them later Solutions & explanations for every question Realistic exam simulations for the referee exam Topics covered Football rules & rule interpretation Offside rule Fouls & unsporting behavior Disciplinary sanctions Match control & restarts Handball rule Penalties & free kicks Player & team official behavior Match report & administrative tasks Practical match situations Always up to date Questions and content are updated regularly, so you always learn with the latest football rules and changes to the Laws of the Game. No account needed • Fully usable offline You can use the app immediately without creating an account. All questions and features work offline – learn anytime, anywhere. Important note The questions are for learning support only and are not official exam questions from any football association. This app is not affiliated with the DFB, FIFA, or any other official organization. All content is based on publicly available football rules and official rulebooks. No guarantee is given for completeness, accuracy, or timeliness. Start learning for free now Improve your rule knowledge anytime, anywhere. Download the app and prepare optimally for your referee exam!

FlagLine Offside Lab turns offside from a fuzzy sideline argument into a visual geometry skill you can practice anywhere—no signal, no account, and no dense rulebook on the touchline. Built for youth assistant-referee trainees, high-school players, parent-coaches, and new center officials who must judge the line under pressure. Place attackers, the second-last defender, teammates, and the ball on a true half-pitch grid. The app draws a live offside line, grades edge cases, and explains the outcome in plain English. GEOMETRY LAB Drag and drop up to 11 attackers or defenders plus the ball on a true-scale half-pitch. Snap players to lanes, flip attack direction, and watch the offside line redraw live with distance-to-line readouts and a clear ON, OFF, or WAIT verdict chip. EDGE-CASE BENCH Toggle structured ruling cards for interfering with play, interfering with an opponent, gaining an advantage, deliberate play (including deflections), goalkeeper hand or arm involvement, and exemptions on throw-in, corner, and goal kick. Each card shows a mini diagram you can promote into the full lab. 50+ SEEDED FREEZE-FRAMES Browse scenarios tagged by topic—tight shoulder, late runner, keeper parry, defender header, free-kick wall rebound, goal-kick exit—and by age band from youth through adult. Fork any pack item into your own editable copy. DECISION MODE Reveal a frozen pitch without the answer, choose Onside, Offside, Play-on, or Wait-and-see within a soft countdown, then unlock a plain-language rationale, the correct IFAB-aligned principle, and a one-tap restage in Geometry Lab. SCENARIO EDITOR Name the frame, place players and ball, attach the intended correct call and a short coach note, save into personal packs, and reorder packs for self-study before a course or match weekend. RUN-THE-LINE GUIDE Interactive touchline path showing where an assistant should stand relative to the second-last defender, when to drop and sprint, signal sequence, and large-type rainy-day cue cards for pre-match briefing. EXPORT, WIDGETS, AND ACCESSIBILITY Export a printable PDF cue sheet with scenario thumbnails, correct calls, and personal notes via the system share sheet. Pin a Home Screen widget that shows a daily seed scenario prompt plus your last Decision Mode accuracy summary. Dynamic Type, high-contrast pitch themes (light stadium or dark night match), and yards or meters are supported in Settings. ONBOARDING THAT TEACHES Walk a short onboarding that teaches the second-last-defender rule with three animated half-pitch demos, then pick your role persona—assistant-ref trainee, player, or parent-coach—to bias default scenario packs. PRIVACY BY DESIGN Everything persists in on-device storage. No accounts, no network required, no player contact data, and no analytics resale. A seeded-content reset never wipes user-created packs without confirmation. Turn offside into a repeatable visual skill—live line math, graded freeze-frames, edge-case rulings, and sideline cue cards that work with zero signal.