Lights Out: Reaction Timer

F1-inspired reaction training with multiple game modes, global leaderboards, and 10 official team themes. Free on iOS.

Four Ways to Play

🏜

Five lights count down, then go dark. Tap the instant they go out. Millisecond-precision timing with F1 driver comparisons after every round.

▦

Tap highlighted cells on 3x3, 4x4, or 5x5 grids. Play untimed for accuracy or race the clock in 10-second timed mode.

👥

Face off on one device. Both players tap Ready, lights count down, and the fastest reaction wins. Instant rematch support.

🌐

Place a 3D launch gantry in your room with augmented reality. Pinch to resize, tap to react. Full particle effects on iOS 18+.

🏁

Red Bull, Ferrari, Mercedes, McLaren, Aston Martin, Alpine, Williams, Haas, Kick Sauber, and RB. Each with authentic team colors.

🎨

Standard, Cyberpunk, Retro Web, Crayola, and Skeuomorphic. Each changes light shapes, fonts, colors, and full-screen overlays.

🏆

Game Center and online leaderboards with weekly resets. See player profiles with emoji avatars, streaks, and stats.

🏅

Unlock achievements for reaction speed tiers, cumulative play milestones, and grid trainer records. Synced with Game Center.

🔥

Play every day to build your streak. Your streak badge shows on leaderboards for everyone to see.

📈

Track personal bests, averages, session history, and accuracy. Compare your times against real F1 driver benchmarks.

61 rotating motorsport and reaction speed fun facts
Haptic feedback tuned for each game event
Background music and sound effects with full audio controls
Apple Watch companion app for quick practice
Privacy controls: opt out of analytics, disable online sync, or delete your data anytime
6 languages: English, Spanish, French, German, Japanese, and Portuguese
Completely free with no in-app purchases