About VIGILFI
Free brain tests for everyone. No sign-up. No data collection. Just science.
What is VIGILFI?
VIGILFI is a free online platform for testing your cognitive abilities. We offer a growing collection of precision brain tests including reaction time, typing speed, number memory, visual memory, color perception, and sequence memory.
Every test runs entirely in your browser. We don't store your data, require an account, or track your results. Your scores are yours — share them with beautiful downloadable result cards or challenge your friends directly.
Why We Built This
We believe cognitive testing should be accessible, beautiful, and free. Most brain testing sites are cluttered with ads, require sign-ups, or look like they were designed in 2005. VIGILFI is different — it's fast, modern, and respects your privacy.
The Science
Our tests are based on established cognitive science research. Reaction time tests measure processing speed. Memory tests assess working memory capacity, following Miller's Law (the average person can hold 7±2 items in working memory). Color perception tests evaluate visual discrimination ability.
Percentile rankings are calculated using approximate normal distributions based on published research data. They provide a rough estimate of how your score compares to the general population.
Privacy First
No Accounts
No sign-up, no login, no email required.
No Data Storage
Your scores are never sent to any server.
100% Client-Side
Everything runs in your browser. Nothing leaves your device.
Works Everywhere
Desktop, tablet, mobile — no app download needed.
Contact
Have feedback, suggestions, or found a bug? We'd love to hear from you.
Email: hello@vigilfi.com