Cortex Brain Trainer: N-Back
Stroop, Schulte, Reaction Test
Only for iPhone
Free · In‑App Purchases
iPhone
N-Back, the Stroop test, Schulte tables, a reaction time test and speed reading, plus classic puzzles. Fully offline: no account, nothing leaves your phone.
Cortex is an offline brain-training app: dual N-Back, a Stroop test, Schulte tables, a reaction time test and an RSVP speed reader, plus Sudoku, Nonogram and Word Search puzzles. No account, no internet, no tracking: nothing leaves your phone.
Also known as: n-back memory test, Stroop effect test, Schulte grid, reflex test, speed reading trainer.
Seventeen focused brain games and classic puzzles, plus Peak Hours: a personal cognitive instrument you won't find in other brain trainers. Four games are free forever; unlock all seventeen plus Peak Hours with a single purchase. No subscription, no ads, no accounts, and nothing leaves your device.
PEAK HOURS
A quick reaction check you can take any time of day. Over time it charts when your mind is sharpest and reveals whether you're a morning lark, a night owl, or steady all day. Fully private, stored only on your phone.
THE GAMES
Memory, focus, reading, timing and spatial skills, each built around a real task:
- N-Back, Sequence Memory and Remember-To for memory
- Stroop, Track and Peripheral Vision for attention
- Schulte Table and Speed Reader for visual scanning and reading
- Mental Rotation for spatial reasoning
- Inner Clock for your sense of time
- Number Sequences for pattern reasoning
SKILL DRILLS
- Mental Math: learn a real trick, then drill it
- Speed Math and Estimation for arithmetic fluency and number sense
CLASSIC PUZZLES
- Nonogram: solve the number clues to reveal a hidden picture
- Sudoku and Word Search, as pure puzzles
FREE TO START, UNLOCK ONCE
Four games are free forever: N-Back, Stroop, Schulte Table and Speed Math. Unlock all seventeen games plus Peak Hours with a single one-time purchase. No subscription, no ads, no renewing charges.
PRIVATE BY DESIGN
No accounts, no analytics, no advertising, no third-party trackers. The app works fully offline and your stats stay on your phone. Privacy here isn't a setting you switch on; it's how the app is built.
BUILT FOR FOCUS
A precision design made for concentration, not a candy-coloured slot machine. Make it yours with multiple themes, light or dark, and a custom accent colour. Track your personal bests at your own pace.
Now fully available in nine languages.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Half open on a table, "How to play" now sits above the fold, with each game's options and Start below it. Plus smaller fixes.
The developer, Stephane de Barbanson, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Stephane de Barbanson
- Size
- 49.9 MB
- Category
- Education
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 or later.
- iPhone
- Languages
English and 8 more
- English, Dutch, French, German, Italian, Norwegian Bokmål, Portuguese, Spanish, Swedish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Unlock all games $3.99
- Copyright
- © De Barbanson Data Solutions
