Cortex Brain TrainerCortex Brain Trainer
Sharpen your mind, one rep at a time.
Seventeen brain games, skill drills and classic puzzles in one calm, private app. Plus Peak Hours, which reveals when your mind is sharpest. Pay once, and nothing ever leaves your device.
Free for 3 days, then €3.99 once. No subscription, ever.
Everything it needs.
Nothing it doesn't.
The breadth of a real brain trainer, the calm of a focused tool, and Peak Hours you will not find anywhere else.
Find when your mind is sharpest
A quick reaction check, any time of day. Over time it charts your sharpest hours, all on your device.
Memory, focus, reading and logic
N-Back, Stroop, Schulte, Speed Reader and more, each built around a real task, not a gimmick.
Learn a trick, then drill it
Mental Math teaches a real shortcut, then lets you practise until it is second nature.
See it in action
Private by design. Yours for good.
No accounts, no analytics, no cloud that isn't yours. Just games, and your own progress.
Nothing leaves your device
No account, no ads, no third-party trackers. Your scores and streaks stay on your phone.
One calm payment
Four games are free for good. A single purchase unlocks everything else. No subscription, ever.
Sharpen your mind, one rep at a time.
Free for 3 days, then €3.99 once. No subscription, ever.
Specifications
- Price
- €3.99 once
- Trial
- 3 days free
- Platforms
- iOS · Android
- Languages
- EN · NL · DE · FR · ES · IT · PT · SV · NB
- Category
- Games
Questions
Is Cortex a subscription?
No. N-Back, Stroop, Schulte Table and Speed Math are free for good, and a single one-time purchase unlocks every other game and Peak Hours. No subscription, no ads, no recurring charges.
What is Peak Hours?
A quick reaction check you can take any time of day. Over time it charts when your mind is sharpest, whether you are a morning lark, a night owl, or steady all day. It stays on your device.
Does Cortex work offline?
Yes. Everything runs on your device with no account and no connection. Your bests, streaks and settings are stored locally.
What data does Cortex collect?
None. No account, no analytics, no third-party trackers. If your device backs up to iCloud or Google, that backup is yours and controlled by you.
Which files can the Speed Reader import?
TXT, PDF, DOCX and EPUB. Imported files are read and processed entirely on your device and are never uploaded.
Are Sudoku and Word Search brain training?
No. They are included as classic puzzles for enjoyment, not as cognitive training.
Guides
- Brain training without a subscription: free and pay-once options for iPhone and Android
Most brain training apps want a monthly plan. What the free tiers give you, what the research shows and how to train on your phone without a subscription.
