About
Thirty small games. One honest number.
Braincheck is a free browser-based cognitive challenge. A full run takes about six minutes and samples seven abilities:
- Reaction — how fast you fire.
- Memory — short-term and working memory.
- Logic — patterns and reasoning.
- Vision — visual attention and processing.
- Focus — impulse control and attention.
- Flexibility — rule switching and adapting.
- Decision Making — speed versus accuracy under risk.
Fair play, honest scores
Questions are generated as you play, so every run is different. There's no account, nothing to install, and your results never leave your device. The site watches for suspicious patterns (like answering faster than humanly possible) to keep scores meaningful.
What a score actually means
Your result is a playful estimate of how you performed on these specific mini-games on this particular day. It is not an IQ test, not a diagnosis, and not scientifically certified. Take it seriously at your own peril.
Tech
Built with plain HTML, CSS, and JavaScript. No frameworks, no trackers, no server-side processing.