Comparison

CogniFit vs memoryOS

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

Head to head
About

CogniFit

Engage in fun mental games designed to test, train, and improve your cognitive functions. Monitor your progress with personalized scores and track improvements in areas like memory, focus, and reaction time. This app offers a scientific approach to brain health for users of all ages.

Highlights
  • Personalized brain training sessions
  • Cognitive score monitoring
  • Improve memory, focus, and reaction time
  • Track cognitive age
  • Guided mindfulness techniques
  • Interactive brain games
Read full description

Your mind changes every day. Some days feel clear. Others feel harder to navigate. CogniFit brings a new daily approach to brain health, helping you understand how your mind performs, adapts, and evolves over time. Built on more than 20 years of published research, CogniFit combines cognitive assessment, adaptive training, and daily guidance into a single system designed to support mental clarity, focus, and long-term cognitive wellbeing. ‣ Your Brain Age At the center of the experience is your Brain Age: a simple way to understand how your mind is performing today, and how it changes over time. Monitor your daily and weekly cognitive scores, set goals, and build a personalized training plan around your own rhythm. ‣ Five Abilities, One Evolving Picture Memory, focus, coordination, reasoning, and perception are measured over time to reveal patterns in how your mind performs day to day, alongside up to 22 other cognitive abilities, including processing speed and reaction time. ‣ Built Around You Training sessions adjust gradually, adapting difficulty, pace, and cognitive focus based on how you perform. The more you use CogniFit, the more the experience adapts to you. ‣ Guidance Throughout the Day Gentle reminders, reflections, and quick check-ins help support consistency throughout the day, especially during moments when focus or energy feels lower. ‣ Grounded in Cognitive Science Developed by neuroscience experts, CogniFit's patented Individualized Training System (ITS) is used by the scientific community, universities, hospitals, families, and medical centers around the world. ‣ The Benefits • Track your cognitive score (0-100) daily and weekly • Personalized training sessions based on the areas you want to focus on • A custom weekly plan, built around your routine • Scores across cognitive domains, including reasoning, coordination, memory, perception, and attention • Compare your Brain Age to your actual age • Guided mindfulness techniques to support your mental wellbeing • More than 100 interactive games, including Penguin Explorer, Mahjong, and Reaction Field • Video Coaches to guide you through every step • Brain games and brain teasers for adults and children alike ‣ Designed for Everyday Life A complete redesign brings a calmer, more intuitive experience that fits naturally into your routine. Short sessions, clearer feedback, and a more focused interface make daily cognitive care simple, approachable, and sustainable. Small moments, repeated daily, that's how real change happens. Are you ready to understand your brain a little better, every day? Pricing and Conditions CogniFit offers monthly ($9.99/mo) and annual ($59.99/yr) subscription packages. All amounts are in USD. All subscriptions are processed through the user’s app store account. Currency conversions for user’s outside of the US may apply. All subscriptions renew automatically until cancelled. For complete details, please review: https://www.cognifit.com/terms-and-conditions

About

memoryOS

Enhance your memory and focus with interactive lessons and a virtual mind palace game. Learn scientifically proven techniques to improve knowledge retention and recall a wide range of information, from names and numbers to complex data and entire books.

Highlights
  • Interactive bite-sized lessons
  • Virtual Mind Palaces game
  • Spaced repetition system
  • Scientifically proven techniques
  • Improve knowledge retention
  • Memorize diverse information
Features
Read full description

memoryOS contains interactive bite-sized lessons by a 2X World Memory Champion and an educational 3D game of Virtual Mind Palaces - all in one easy-to-use app. It utilizes scientifically proven memory techniques, spaced repetition and patented game mechanics to enhance long-term memory storage and improve knowledge retention. memoryOS is loved by 500,000+ people worldwide because it is a whole new, joyful & game-changing tool for obtaining the most effective memorization skills. Co-founded by Jonas von Essen, who went from struggling to remember to becoming a World Memory Champion, winning on Who Wants To Be a Millionaire, "Jeopardy, and setting a world record by memorizing 100,000 decimals of Pi . memoryOS app has over 18k public worldwide ratings on Apple and Google app stores combined, averaging 4.8 stars. Users also continue adding 5-star reviews daily, sharing how effective and life-changing memoryOS has been for them. Also, memoryOS remains the most crowdfunded app in Kickstarter’s history. Memorization is as important as reading and writing and should be taught as our base skill. Our mission is to enable millions of people to remember needed information easily. With memoryOS, you will learn how to memorize: - Names, Long speeches, Lists of items, Birthdays, Personal facts, Passwords, Trivia, Languages, Vocabulary and phrases, Countries and Capitals, Flags, Historical timeline, Numbers, Periodic table - Content of complete books, Dates of significant events, Complex data structures, Concepts, and figures - Art, Anatomy, Decks of cards, Advanced number systems; Long sequences of numbers, Binary Digits You will also learn: - How to keep track of years, months, weeks, and days - Advanced study techniques, Spaced Repetition system, Speed memorization Why did Google Brands Accelerator recognize memoryOS as being 'Light Years Ahead' in the memory space? • memoryOS delivers results: During our pre-launch phase, thousands of users completed our demo and, on average, had a 70% increase in recall and a 60% increase in recall speed just after the first ~40min session. • Providing your mind with structured storage space: We have spent tens of thousands of hours creating and optimizing our Virtual Mind Palaces, so you don’t have to spend months constructing your own the hard way. These virtual palaces serve as blueprints for your mind's storage space, allowing you to easily encode, store and recall like a memory champion. • A proven innovative approach that works: During our research and development stage, thousands of people of all age groups and even those with difficult medical conditions found memoryOS as an effective and useful tool. Actual results exceeded our team’s expectations. • Gamified edtech at its best: memoryOS has proven to work on people with no prior gaming experience - anyone can use it. Utilizing the power of the Unity game engine, memoryOS is widely accessible on all mobile and tablet devices and is soon coming to VR. -- Joining memoryOS is free. This provides extensive value on the free plan, and you are not obligated to pay to start using it. You can subscribe to a Student Premium plan for as low as $3.49/month when billed annually or $4.99/month when billed monthly (it can be 10-20% higher in some countries due to local taxes). You can subscribe through the 'Shop' section of the memoryOS app and find the above-mentioned or go to your App Store app's profile and choose a desired plan there. Recurring payments will automatically renew unless you cancel your account at least 24 hours before the end of the current subscription period. You can manage your subscription, cancel anytime, or turn off auto-renewal by accessing your iTunes account. Join the memoryOS community of over 500,000+ early adopters who share this memorable journey! -- Terms: memoryOS.com/terms Privacy policy: memoryOS.com/privacy-policy Learn more at: memoryOS.com Contact us: support@memoryOS.com

Screenshots

CogniFit4 screens
memoryOS4 screens

Verdict

The call

The clearest difference is rating: memoryOS at 4.9 against CogniFit's 4.5. memoryOS also leads on ratings volume (17K vs 1.7K) and chart position (#53 vs unranked). CogniFit's advantage is update cadence (weekly vs every 2 weeks). On price, ads, in-app purchases and monetization model there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. CogniFit sells 14 in-app purchases, starting at $4.99 per month and memoryOS sells 23 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

memoryOS holds the better App Store score, 4.9 against 4.5. That said, the two scores are not equally well evidenced: memoryOS has 17K ratings behind it against 1.7K, so its average is the more settled of the two. Written reviews point the same way: 71% of CogniFit's written reviews are positive against 80% of memoryOS's.

UpkeepUpdate frequency

CogniFit ships an update weekly, memoryOS every 2 weeks. The most recent releases landed on October 21, 2026 and October 22, 2026 respectively.

Scorecard6 real differences · 5 level
CogniFit versus memoryOS: the parameters behind the verdict, then further details
ParameterCogniFitmemoryOS
PriceFreeFree
Rating4.5 (1.7K ratings)4.9 (17K ratings) — better
Positive reviews71.0% of reviews80.4% of reviews — better
Number of ratings1.7K17K — better
Update frequencyWeekly — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank—#53 — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.2 — better
Further details — not scored
Size239 MB248 MB
Age rating4+4+
DeveloperCogniFitEncoder Inc.

Customer experience

CogniFit

All ratings1,736 ratings
Positive87.0%
Neutral6.2%
Negative6.9%
Written reviews535 reviews
Positive71.0%
Neutral9.7%
Negative19.3%

memoryOS

All ratings16,799 ratings
Positive97.2%
Neutral1.0%
Negative1.8%
Written reviews1,692 reviews
Positive80.4%
Neutral4.8%
Negative14.8%

User reviews

CogniFit

From 1.7K App Store ratings

What we love

  • 🚀 Varied and interesting
  • 👍 Great design, learn about strengths and weaknesses
  • 👍 Challenging and engaging
  • 👍 Amazing app
  • 👍 Comprehensive assessments and personalized training

Room to improve

  • 💰 Free but not free, locked features require payment
  • 🐛 Freezes and crashes, app not working properly
  • 🐛 Inconsistent audio, issues with Bluetooth devices
  • 🐛 Confusing instructions, difficult to understand some games
  • 🐛 Glitchy controls, unresponsive buttons

memoryOS

From 17K App Store ratings

What we love

  • 🚀 Effective memory techniques
  • 👍 Interactive and engaging
  • 💡 Innovative use of memory palaces
  • 🤩 Impressive results in a short time
  • 🎉 Fun and enjoyable to use

Room to improve

  • 💰 Expensive subscription model
  • 🐛 Buggy and crashes frequently
  • 🤔 Confusing navigation and UI
  • 🔒 Lack of transparency around pricing
  • 🙄 Aggressive upselling and marketing tactics

Bugs and requests

CogniFit

Reported bugs

5 issues
  • Constant need to restart iPad to get app to work
  • Games freezing and progress not saved
  • Buttons and controls not working as expected
  • Inconsistent loading and crashing issues
  • Personalized training not functioning properly

Requested features

6 requests
  • More language options
  • Ability to skip games during personalized training
  • Option to practice specific weak areas
  • Clearer instructions and tutorials for all games
  • Accommodate for color blindness and visual impairments
Show 1 more
  • More engaging and less repetitive games

memoryOS

Reported bugs

5 issues
  • Login issues and account management problems
  • Frequent crashes and app instability
  • Navigation and UI elements not working as expected
  • Syncing issues between devices and lost progress
  • Connectivity problems when using cellular data

Requested features

5 requests
  • More free content and lessons
  • Ability to create custom memory palaces
  • Better progress tracking and analytics
  • Integration with other learning/productivity apps
  • Offline mode for lessons and memory palaces

In-app purchases

14 purchases

CogniFit

Subscriptions13
  • Monthly Premium7 Days trial$4.991 Month
  • Monthly Premium7 Days trial$6.991 Month
  • Monthly Premium7 Days trial$7.991 Month
Show 10 more
  • Monthly Premium7 Days trial$8.991 Month
  • Monthly Premium7 Days trial$9.991 Month
  • Monthly Subscription 50% Off$9.991 Month
  • Subscription Monthly$12.991 Month
  • Monthy Basic$19.991 Month
  • Monthly Basic$19.991 Month
  • CogniFit Premium7 Days trial$19.991 Month
  • CogniFit Premium7 Days trial$59.991 Year
  • Yearly Subscription 50% Off$59.991 Year
  • Yearly Basic$119.991 Year
One-time1
  • Assessment - Full price$49.99
23 purchases

memoryOS

Subscriptions20
  • Student Weekly Plan$3.997 Days
  • Student Monthly Plan7 Days trial$5.991 Month
  • Expert Weekly Plan7 Days trial$6.997 Days
Show 17 more
  • Essential Weekly Plan7 Days trial$6.997 Days
  • Essential Monthly Plan7 Days trial$14.991 Month
  • Essential Monthly Plan2 variants$14.991 Month
  • Essential Monthly Plan$16.991 Month
  • Student 3 Months Plan$19.993 Months
  • Expert Monthly Plan$24.991 Month
  • Expert Monthly Plan$29.991 Month
  • Expert 3 Months Plan7 Days trial$49.993 Months
  • Expert 3 Months Plan$69.993 Months
  • Expert 6 Months Plan7 Days trial$89.996 Months
  • Essential Annual Plan1 Month trial$89.991 Year
  • Essential Annual Plan7 Days trial3 variants$89.991 Year
  • Essential Annual Plan14 Days trial$89.991 Year
  • Expert Annual Plan7 Days trial$148.991 Year
  • Expert Annual Plan1 Month trial$149.991 Year
  • Expert Annual Plan7 Days trial$174.991 Year
  • Expert Annual Plan1 Month trial$174.991 Year
One-time3
  • 10 Hearts$0.99
  • 10 Loci Coins$2.99
  • 50 Loci Coins$14.99

Questions

Is CogniFit free?
CogniFit is free to download, with in-app purchases available.
Is memoryOS free?
memoryOS is free to download, with in-app purchases available.
Which has better reviews, CogniFit or memoryOS?
memoryOS is rated higher. CogniFit averages 4.5 out of 5 from 1.7K ratings, while memoryOS averages 4.9 from 17K ratings.
Do CogniFit or memoryOS have ads?
Neither CogniFit nor memoryOS shows ads.
Which is updated more often, CogniFit or memoryOS?
CogniFit ships an update weekly, and memoryOS every 2 weeks. Most recently, CogniFit was updated on October 21, 2026 and memoryOS on October 22, 2026.

Other comparisons