Brain training, made honest

Sharpen your mind, ten minutes at a time.

Cortex is a brain-training game app โ€” short, focused games across memory, focus, logic, math, reaction, spatial, word, and executive function. Real progress tracking, no gimmicks.

60+games
8skill categories
0ads or trackers

Eight ways to train

Every category has its own set of games, each with a real skill behind it.

MemoryRecall & recognition
MathMental arithmetic
ReactionSpeed & reflexes
FocusSustained attention
LogicReasoning & puzzles
WordLanguage & vocabulary
SpatialVisual & spatial reasoning
ExecutivePlanning & control

What keeps you coming back

Not just games โ€” a real practice you can stick with.

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Daily workout & streaks

A short daily set across categories, plus a streak that tracks real consistency โ€” with a streak freeze for the days you miss.

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Peak Brain Score & Brain Age

A composite score and a playful "brain age" built from your own accuracy, speed, and consistency โ€” clearly labeled as fun, not clinical.

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Leaderboard & friends

Compare scores, send friend challenges, and see where you rank โ€” always by score, never by anything more personal than that.

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Daily challenge

One curated game a day with a bonus, plus a full history of what you've completed.

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Practice mode

Play any game without it counting toward your stats โ€” for warming up, or just for fun.

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Dark mode & colorblind mode

A full dark theme, plus check/cross icons on correct and incorrect answers so color is never the only signal.

No ads. No trackers. No selling your data.

Cortex runs on infrastructure we operate ourselves, not a third-party data broker. Here's exactly what we collect and why.