About the tools

About FPSReaction

FPSReaction offers free browser-based reaction time and aim practice tools with clear, practical context for each result.

What FPSReaction Provides

Use the Reaction Time Test to measure click response timing across five rounds, or the Aim Trainer to practice target acquisition and review a timed run.

How the Tests Work

The tests run locally in the browser. They use your device and browser to present a visual task, record interactions, and show the result during the same session.

Measurement Limits

These are practical browser tests, not laboratory measurements. Display refresh rate, input hardware, browser scheduling, device performance, attention, and fatigue can affect a result.

Our Approach

FPSReaction is independently operated as a browser-tool website. We publish the timing, scoring, validity, and limitation rules behind the tools so a result can be interpreted in context. The site is not officially affiliated with or certified by game publishers, medical organizations, laboratories, or esports federations.

How Content Is Maintained

Descriptions of FPSReaction behavior are checked against the current browser code. We do not present invented user studies, population percentiles, or laboratory accuracy. Technical feedback can be sent through the public contact channel.