Scientifically measure your reaction speed, working memory, focus, and processing speed. Free brain training to visualize your cognitive performance.

Anima Playground — AI with an Eye for Design

AI with an Eye for Design

Hey everyone! I'm Yun, the maker of CortexLab. I built this because I wanted a simple way to know if my brain was actually performing well on any given day — not just a vague feeling, but real data. As a developer, some days I feel sharp and productive, other days I can't focus at all. But I had no way to quantify that. So I built CortexLab — a 5-minute daily checkup that measures 5 cognitive abilities: alertness, processing speed, memory, multitasking, and insight. The idea is simple: take the test daily, track your trends, and start noticing what actually affects your brain performance — sleep, exercise, caffeine, stress, whatever it may be. Built with Next.js, React, Supabase, and TypeScript. Available in English and Japanese. I'd love your feedback — what would you want to see next? Thanks for checking it out!

Tried this out of curiosity and it was surprisingly fun. The reaction speed test was humbling lol. Cool to see all 5 scores broken down. Now I want to test again tomorrow to see if sleep actually makes a difference. Clean UI too

Anima Playground — AI with an Eye for Design

AI with an Eye for Design

CortexLab

Track your brain performance in 5 minutes a day

Track your brain performance in 5 minutes a day