Comparison

MindFlexDual vs Cortex Brain Trainer

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

MindFlexDual

Features
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MindFlexDual is a cognitive training app using the scientifically validated Dual N-back method to strengthen working memory. Users simultaneously process visual and auditory stimuli, identifying matches from N steps back. Features include: * Evidence-based brain training protocol * Adjustable difficulty (1-9 back levels) * Customizable stimulus intervals (1.5-5.0 seconds) * Flexible session length (10-100 trials) Regular training may improve focus, information retention, problem-solving abilities, and multitasking skills. Perfect for students, professionals, and anyone seeking to enhance cognitive performance.

About

Cortex Brain Trainer

Features
Read full description

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.

Screenshots

MindFlexDual4 screens
Cortex Brain Trainer3 screens

Verdict

The call

The clearest difference is price: Cortex Brain Trainer at Free against MindFlexDual's $0.99. Cortex Brain Trainer also leads on iOS requirement (16.4 vs 18.2). MindFlexDual's advantage is in-app purchases (none vs 1). On ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Cortex Brain Trainer is free to download; MindFlexDual costs $0.99 up front. Cortex Brain Trainer sells 1 one-off in-app purchase. MindFlexDual asks for nothing beyond the download.

Scorecard3 real differences ยท 3 level
MindFlexDual versus Cortex Brain Trainer: the parameters behind the verdict, then further details
ParameterMindFlexDualCortex Brain Trainer
Price$0.99Free โ€” better
Update frequencyโ€”Every 6 days
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad โ€” betteriPhone
Requires iOS18.216.4 โ€” better
Further details โ€” not scored
Size2 MB48 MB
Age rating4+4+
Developerkitakura kengoStephane de Barbanson

In-app purchases

None

MindFlexDual

No in-app purchases

1 purchases

Cortex Brain Trainer

One-time1
  • Unlock all games$3.99

Questions

Is MindFlexDual free?
MindFlexDual costs $0.99, with no in-app purchases.
Is Cortex Brain Trainer free?
Cortex Brain Trainer is free to download, with in-app purchases available.
Do MindFlexDual or Cortex Brain Trainer have ads?
Neither MindFlexDual nor Cortex Brain Trainer shows ads.

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