Support

Reaction Light Trainer turns the phones you already own into reaction-light training pods. If something isn't working, the answers below cover the most common questions — or just email us.

Devices can't find each other

• All devices must be on the same Wi-Fi network (not cellular, not a guest network).
• Make sure the host has tapped Host Training first — joiners discover the host's room.
• iOS will ask for Local Network permission the first time — it must be allowed (Settings → Privacy & Security → Local Network).
• Some routers isolate Wi-Fi clients (“AP/client isolation”). If discovery never works on one network but works on your phone's hotspot, this is why — disable isolation or use a hotspot.

Reaction times look wrong

Each device measures your reaction on its own clock from the moment its screen lights up, so Wi-Fi lag does not affect scores. If times still look off, make sure the screen isn't in low-power mode and the device isn't heavily loaded.

What do the training settings mean?

• Light delay — the pause before the next light. “Random” prevents you from anticipating a rhythm (recommended for real reaction training).
• Adaptive difficulty — the reaction deadline tightens after clean hits and eases after misses, keeping you at your limit.
• Competition — all pods light at once; first tap wins the round.
• Motion hit — a physical tap/impact on the device counts as a hit, so you can mount phones and strike near them.

Privacy

No accounts and no cross-app tracking; training data stays on your device. The free version shows ads (Google AdMob) with a one-time Remove Ads option. Read the full privacy policy.