Built for people who want to improve.

BrainRivals is a cognitive performance platform built around one idea: competition should make progress feel sharper, not noisier. There are 15 tests across four categories — Reaction, Memory, Precision, and Perception — each with a distinct browser task and scoring format.

Every test is free, runs entirely in your browser, and requires no download. When you sign in, eligible results can be 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 make competition feel vague and unfair. We wanted something different — a platform laser-focused on personal growth, with daily, weekly, and all-time leaderboards for eligible scores saved by signed-in players.

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 — Reaction Time, Stroop Test.
• –Memory — Sequence Memory, Number Memory, Verbal Memory, Chimp Test, Visual Memory.
• –Precision — Aim Trainer, Typing Speed, Math Speed, Click Speed.
• –Perception — Tone Audibility, Visual Detail, Time Estimation, Stop the Clock.

• –Transparent measurement — Each test uses a consistent scoring rule. Browser, device, practice, and testing conditions can affect results, so personal trends are more useful than a single run.
• –Self-improvement first — Your personal best is always the headline. Leaderboards add context and momentum, but they never replace your own trajectory.
• –Free current access — The tests available today can be used without payment. We describe current access plainly instead of promising that product terms can never change.
• –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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