ReactionLab is a free precision reflex testing platform with 4 game modes. 🏎️ Classic Light Test 🏎️ F1 Race Start simulation 🎨 Color Match cognitive test 🔢 Number Rush sequence speed ⚡ Real-time global leaderboard 🛡️ Anti-cheat verified scores 📸 Download premium score card 🆓 100% free — no login required Earn your F1 rank from Pit Crew all the way to Max Verstappen!