BrainGauge is a free collection of 12 brain tests, knowledge quizzes, and skill games. We built it around a simple frustration: most online tests make you sit through 30 questions and then hide the result behind an email form or a paywall. Here, every test is fully playable and every result is fully visible — free, instantly, every time.
How our tests are built
Our cognitive tests (IQ, memory, reaction time, spatial reasoning) are modeled on classic paradigms from psychology research — Raven-style pattern matrices, Simon-style sequence recall, go/no-go inhibition tasks, and Shepard-Metzler mental rotation. Knowledge quizzes are written and fact-checked against standard references, and every question ships with an explanation so you learn something even when you miss.
What our scores mean
Our results are entertainment-grade estimates designed to be directionally meaningful — percentiles are based on published population averages where available. They are not clinical instruments, and no online test is a substitute for a professionally administered assessment.
Privacy by design
Everything runs in your browser. Your answers and personal bests are stored only on your own device — we have no accounts, no user database, and no way to see your results. See our privacy policy for details.
Contact
Questions, corrections, or feedback? We read everything: [email protected]