Terms & Conditions

Updated October 20, 2026. human-reactiontimetest.com publishes these independent tools for educational and recreational use. Questions can be sent to hello@human-reactiontimetest.com.

Purpose and limitations

The results describe browser tasks or a stated ruler-drop calculation. Hardware, software, task conditions, attention, and input method can affect them. They are not medical advice, a diagnostic test, an IQ assessment, or a qualification for driving, sport, employment, or other safety-sensitive activity.

No particular score, training improvement, ranking, income, or real-world outcome is guaranteed. Source material belongs in its original method context. The site supplies no universal population norm for its browser protocols.

Game rules

The tool pages state their original versioned rules, including valid inputs, false starts, timing windows, and failure counts. Compare only compatible protocols. The lights-out challenge is an independent game and has no Formula 1 affiliation or official-driver benchmark.

Reasonable use

Use the site without disrupting its availability, trying to access another person’s systems or data, or presenting automated events as verified manual human results. A local score is not proof of authenticity or a recognized record.

Take a break if a task becomes tiring or uncomfortable. Use the partner-assisted ruler activity with a normal rounded ruler and a supported setup. Do not substitute heavy or sharp falling objects.

Content and outside sources

The site’s explanations, original diagrams, and implementation are published by human-reactiontimetest.com. Linked publications and their marks remain with their respective owners. Linking does not transfer rights to third-party material or imply endorsement.

Data, corrections, and availability

Optional local records can be cleared or lost through browser settings; keep an export if you want your own copy. See the Privacy Policy. Tool behavior and pages may change as issues are corrected, with protocol changes identified when relevant.

Report incorrect statements or behavior through Contact. These terms describe the use of the service and do not invent a governing jurisdiction or remove rights provided by applicable law.