Comparison

memoryOS vs BrainGain

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

Head to head
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

About

BrainGain

Engage in daily brain training with adaptive games and mental tests designed to improve memory, focus, problem-solving, math, and language skills. Choose short bursts or longer sessions to fit your schedule and track your progress.

Highlights
  • Adaptive cognitive games
  • Daily brain workouts
  • Build memory and focus
  • Improve math and language skills
  • Problem-solving exercises
  • Mental tests and assessments
  • Progress tracking
Features
Read full description

Swap mindless scrolling for brain training. Meet Brain Gain—your all-in-one brain training app with adaptive games, mental tests, and daily brain workouts. Rated 4.7 by 18,000+ users. Join 1.8 million people training smarter. Whether you want to think faster at work, trade scrolling for something meaningful, or simply keep your mind sharp, Brain Gain makes every session count. It helps you build five essential cognitive skills: memory, focus, problem-solving, math, and language—through 25+ games and 1,000+ units that adapt to your abilities. With Brain Gain, you can: • Build cognitive skills—strengthen memory, focus, math, language, and problem-solving for everyday life. • Train your way—choose 5-minute bursts or 20-minute deep sessions for workouts that fit your schedule. • Stay challenged—adaptive difficulty that grows with you, so games never feel too easy. • Know your strengths and weaknesses—take mental tests to see where you shine and where to improve. • Boost your mental skills for free—access games and tests at no cost, then upgrade when you're ready. TRAIN YOUR BRAIN DAILY Join a game marathon for an epic sprint through dozens of progressive levels. Choose your Marathon length and make brain training part of your daily routine. CALCULATE FASTER Sharpen your math skills with games that make numbers fun. From quick arithmetic to tricky equations, you'll solve true-false challenges and find missing math symbols—all in fast, focused sessions. BOOST YOUR LANGUAGE SKILLS Put your vocabulary to the test. Tackle classic word puzzles, word-building challenges, and creative language games designed for enthusiasts of all levels. TAKE MENTAL TESTS Discover how your mind works. Explore self-assessments for IQ, ADHD, childhood trauma, and more—then get detailed results with personalized advice and book recommendations. IMPROVE MEMORY & FOCUS Want to remember more and stay focused longer? Build stronger recall and concentration with engaging challenges—from finding lost paintings to matching games and dynamic puzzles. SHARPEN ANALYTICAL SKILLS Think like a problem-solver. Spot patterns, analyze information, and make quick decisions in exercises built to boost critical thinking. TRACK YOUR PROGRESS See how far you've come. Detailed stats show your improvement across every skill category, so you always know where you're growing and what to focus on next. Ready to level up your mind? Download Brain Gain today and start your journey to a sharper, brighter, and more confident you through innovative puzzles, brain games, and scientifically inspired brain training! FAQ Q: Is Brain Gain based on real science? A: Yes! Our app is built on research-backed cognitive training principles. We designed every game to challenge your mind and improve vital cognitive skills. Learn more: https://www.cognitivetrainingdata.org/ Q: Can I use Brain Gain for free? A: Absolutely. Access brain games and mental tests at no cost. When you're ready for more, upgrade for unlimited access to all features. Q: Will I run out of things to do? A: Not likely. Explore 25+ adaptive games, mental tests with personalized insights, daily Marathons, and fresh themed Quizzes released for holidays and special events. UNLIMITED ACCESS Subscribe to unlock all games, tests, and features. Subscriptions renew automatically based on your selected plan. By using the app, you agree to our Privacy Policy and Terms of Use: https://aiby.mobi/braingain_ios/privacy https://aiby.mobi/braingain_ios/terms

Screenshots

memoryOS4 screens
BrainGain4 screens

Verdict

The call

The clearest difference is review sentiment: memoryOS at 80% against BrainGain's 62%. memoryOS also leads on rating (4.9 vs 4.7) and chart position (#52 vs #183). On price, ratings volume, update cadence and ads 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. memoryOS sells 23 in-app purchases, starting at $3.99 per 7 days and BrainGain sells 13 in-app purchases, starting at $6.99 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 4.7. Both are backed by a comparable volume of ratings — 17K and 22K respectively. Written reviews point the same way: 80% of memoryOS's written reviews are positive against 62% of BrainGain's.

UpkeepUpdate frequency

memoryOS ships an update every 2 weeks, BrainGain fortnightly. Both last shipped on October 28, 2026.

Scorecard3 real differences · 8 level
memoryOS versus BrainGain: the parameters behind the verdict, then further details
ParametermemoryOSBrainGain
PriceFreeFree
Rating4.9 (17K ratings) — better4.7 (22K ratings)
Positive reviews80.3% of reviews — better61.7% of reviews
Number of ratings17K22K — better
Update frequencyEvery 2 weeksFortnightly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#52 — better#183
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.2 — better16.0
Further details — not scored
Size231 MB219 MB
Age rating4+12+
DeveloperEncoder Inc.AIBY

Customer experience

memoryOS

All ratings16,902 ratings
Positive97.2%
Neutral1.0%
Negative1.8%
Written reviews1,694 reviews
Positive80.3%
Neutral4.9%
Negative14.8%

BrainGain

All ratings22,123 ratings
Positive91.3%
Neutral5.6%
Negative3.1%
Written reviews741 reviews
Positive61.7%
Neutral8.5%
Negative29.8%

User reviews

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

BrainGain

From 22K App Store ratings

What we love

  • 🧠 Helpful brain exercises
  • 🧠 Keeps mind active
  • 🧠 Improves memory and focus
  • 🧠 Enjoyable and engaging

Room to improve

  • 💰 Expensive subscription
  • 🔒 Requires payment to access full features
  • 🔍 Limited free trial
  • 🔍 Unclear subscription details
  • 🐛 Technical issues and bugs

Bugs and requests

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

BrainGain

Reported bugs

4 issues
  • Games freezing or not progressing
  • Touchscreen responsiveness issues
  • Incorrect or missing answers in games
  • Unauthorized charges for subscription

Requested features

4 requests
  • Allow users to view test results without subscription
  • Provide more challenging puzzles and games
  • Improve app performance and stability
  • Offer a one-time purchase option instead of subscription

In-app purchases

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
13 purchases

BrainGain

Subscriptions12
  • Premium3 Days trial2 variants$6.997 Days
  • Premium2 variants$6.997 Days
  • Premium3 Days trial$7.997 Days
Show 9 more
  • Premium$7.997 Days
  • Premium3 Days trial$9.997 Days
  • Premium$19.991 Year
  • Premium2 variants$29.991 Year
  • Premium2 variants$34.991 Year
  • Premium$39.991 Year
  • Premium$44.991 Year
  • Premium3 Days trial$59.991 Year
  • Premium$59.991 Year
One-time1
  • Premium$69.99

Questions

Is memoryOS free?
memoryOS is free to download, with in-app purchases available.
Is BrainGain free?
BrainGain is free to download, with in-app purchases available.
Which has better reviews, memoryOS or BrainGain?
memoryOS is rated higher. memoryOS averages 4.9 out of 5 from 17K ratings, while BrainGain averages 4.7 from 22K ratings.
Do memoryOS or BrainGain have ads?
Neither memoryOS nor BrainGain shows ads.
Which is updated more often, memoryOS or BrainGain?
memoryOS ships an update every 2 weeks, and BrainGain fortnightly. Most recently, memoryOS was updated on October 28, 2026 and BrainGain on October 28, 2026.
Which is more popular, memoryOS or BrainGain?
memoryOS currently peaks at #52 in the App Store charts, and BrainGain at #183. Chart position reflects recent download velocity rather than total install base.

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