Brain games
without the BS.
Your brain changes every time you use it. Science calls it neuroplasticity. We call it practice.
A proper little daily workout for attention, processing speed and working memory. We measure how you do and show you honest numbers — no miracle cures, no "delay dementia" promises, no fine print. Just sharp, satisfying games.
Most brain-training apps oversell what they can do — promising sharper memory, protection from decline, even a higher IQ. We don't. CortexCrunch trains specific skills you can measure — and we're upfront about what that does and doesn't mean. Read the science →
Eighteen games. Every skill. All free.
More free games than anywhere else — each one targets a different cognitive skill, and your scores save right here on your device. Filter by what you want to train.
Numbers that stay honest
No claims, no catch
We won't tell you this prevents dementia or raises your IQ. It's a measurable workout for real skills — and it's genuinely fun.
Honest scoring
Reaction time in real milliseconds. Memory span in real digits. Percentiles clearly labelled as estimates, not diagnoses.
Private by default
No account. No login. Your scores live in your browser, not our database. Close the tab and nothing follows you.
Who uses CortexCrunch?
One honest little gym for the mind — used across very different lives, for very different reasons.
Students & exam-takers
For the working memory, focus and processing speed that studying leans on. Five honest minutes between revision blocks.
Older adults
Keeping the mind active and engaged. Speed-based practice is the most encouraging area of the research — explored honestly, with no promises.
Professionals
A quick reset for attention and reaction speed between deep-work sprints — measurable, and a little bit addictive.
People healing
Rebuilding focus at their own pace. Cognitive tasks like these are used in rehabilitation — here they're gentle practice, on your terms, not therapy.
Parents & kids
Screen-light games families actually enjoy together — and quietly exercise memory and attention while they're at it.
Athletes & gamers
Sharpening reaction time and decision speed — the one area where studies show trainable, transferable gains.
CortexCrunch is a cognitive practice tool, not a medical device. The activities here are inspired by research in cognitive science, but we make no claims about treating, diagnosing or preventing any condition. Think of it as a gym for your mind — the benefits depend on consistent practice.
Three minutes. Right now.
No download, no email, no "start your free trial." Pick a game and go.
Start the daily workout →