Apex Legends Reaction Time Test | Train Your Predator Window

Apex duels at 60+ TTK are decided in 150–250 ms. SERO measures the exact stimulus-to-trigger window that decides whether you dash first or hit the floor.

Why Apex Rewards Sub-200 ms Reactions

High movement speed + low TTK on body shots means whoever fires first usually wins the trade. A 30 ms reaction improvement translates to roughly 10–15% more won duels at the same aim level.

Warm Up Without Loading the Game

90 seconds in your browser, in the lobby tab, between matches. Same input-latency-compensated timer as our esports-grade test.

Warm up for ranked Apex

FAQ

Will this help in Apex specifically?

Yes — it trains the cognitive layer that aim trainers skip, which Apex rewards heavily because of movement.

Is it safe to run alongside Apex?

Yes. It is a separate browser page, not a game overlay or memory reader.

Is it free?

Yes, completely free, no signup.