Reaction Time Test
Data & Privacy

Privacy Policy

Last Updated: August 15, 2026

1. Summary of Our Privacy Stance

At Reaction Time Test (accessible at https://reactiontimechecker.com/), our fundamental principle is straightforward: we believe your reflex measurements and testing scores belong strictly to you.

All reaction time computations, high-resolution millisecond tracking, standard deviation calculations, and personal best records occur 100% client-side inside your browser. No reaction data is transmitted to or stored on our servers.

2. Information We Do Not Collect

  • We do not require user registration or personal accounts.
  • We do not collect names, email addresses, phone numbers, or passwords.
  • We do not transmit your reaction test results to external databases.

3. Use of Local Storage (Client-Side Cookies & Storage)

To allow you to retain your personal best scores, view session trend charts, and track unlocked achievement badges between page refreshes, our application uses the browser's standard localStorage API:

  • rtt_history: Stores up to 60 recent reaction attempt values (ms and timestamp) for your trend chart.
  • rtt_sound: Stores your audio toggle preference (true/false).
  • rtt_badges: Stores IDs of your unlocked personal best milestone badges.

You can clear all stored local data at any time by clicking the "Reset History" button in the analytics dashboard or clearing your browser's site data.

4. Edge Delivery & Server Logs

Our site is hosted on Cloudflare's global edge network. Like standard web servers worldwide, temporary technical logs (such as IP addresses, browser user-agent headers, and requested assets) are processed by Cloudflare solely for DDoS protection, network performance routing, and SSL security.

5. GDPR & CCPA Rights

Because we do not store, process, or sell personal identifiers or user databases on our servers, there is no personal profile to request or delete. Your data remains on your physical device.

6. Contact Regarding Privacy

If you have questions regarding this Privacy Policy, you may contact our privacy desk at privacy@reactiontimechecker.com.