Built for people who want to improve.

BrainRivals is a cognitive performance platform built around one idea: you should be competing with your past self, not with strangers. There are 15 tests across four categories — Reaction, Memory, Precision, and Perception — each designed to isolate and measure a distinct mental skill.

Every test is free, runs entirely in your browser, and requires no download. Results are saved to your personal profile so you can track your progress across sessions, days, and months.

Most cognitive benchmarking tools either cost money, bury you in ads, or push global leaderboards that make most people feel worse rather than better. We wanted something different — a platform laser-focused on personal growth, where the only score that matters is yours vs. your own previous best.

BrainRivals started as an independent project with a simple goal: build the cleanest, most honest cognitive test platform on the web, and keep it free.

• –Reaction — How quickly does your brain register and respond to stimuli? Tests include Reaction Time, Sequence Memory, Dual-N-Back, and Hearing Test.
• –Memory — Probe your working and short-term memory with Number Memory, Verbal Memory, Chimp Test, and Visual Memory.
• –Precision — Measure accuracy and consistency of movement with Aim Trainer, Typing Speed, and Word Recall.
• –Perception — Visual attention and pattern recognition — the perceptual layer that everything else builds on.

• –Honest measurement — Scores are calibrated against real benchmarks. We don't inflate numbers to make you feel good; we show you where you actually are.
• –Self-improvement first — Your personal best is always the headline. Global rankings exist but they're never the main event.
• –No paywalls, ever — Every test, every feature, and every piece of your history is free. We sustain the platform through non-intrusive advertising.
• –Guest-friendly — Try any test without creating an account. Sign in only when you want to save progress.

BrainRivals is an independently built and maintained platform. We're a small team passionate about cognitive science, clean software, and making high-quality performance tools accessible to everyone — not just people who can afford subscriptions.

Questions, ideas, or just want to say hello? We'd love to hear from you.

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