Comparison

memoryOS vs Big Stuff Learning

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

Big Stuff Learning

Features
Read full description

BSL is for anyone who wants to prepare for exams efficiently and turn “dead time” in everyday life into real study time — hands-free, structured, and active learning. ACTIVE LEARNING ON THE GO The BSL app integrates the best learning methods: Feynman, Self-Regulated Learning (SRL), Active Recall, Spaced Repetition, Dual Coding, Micro-Learning, and the Generation Effect — supported by AI. BSL turns “just listening on the side” into a guided learning process — with the goal of shifting 70–80% of learning into hands-free time (commuting, sports, routine routes, everyday life …). WHO IS BSL FOR ● You’re preparing for exams (university, career, certifications, languages) ● You never seem to have enough time to study ● You commute, jog, and/or spend a lot of time on the go AI TOOLS: ● Content creation (flashcards, audio sequences, full BSL books, AI Wizard, …) ● Ask follow-up questions, get explanations, summaries, dialogs, and exam simulations MUSIC BEATS ● In the app and on www.bslbeats.com , more than 1,000 vocabulary songs are available German, English, Spanish ● Not isolated, but linked to language learning books, lessons, and vocabulary lists (flashcards) LIBRARY ● Download ready-made BSL books from the library ● Topics like tech, AI, learning, … continuously expanding IMPORTANT INFO UP FRONT ● Registration required ● 1,000 free AI points ● Start free: create 3 of your own BSL books with unlimited learning sequences each ● 10 playlist songs free ● Earn free AI points by watching video tutorials and inviting friends HOW FAST CAN I GET STARTED? ● BSL is a complete learning system — from spaced repetition (SLR) and flashcards to AI tools and the Feynman Method. ● To truly benefit from it, invest a little time first: about 30 minutes in our Academy for setup and your first learning content. ● After that, it runs hands-free: depending on the subject, you can shift up to 80% of your study time to commuting, workouts, and everyday life. Terms Of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

memoryOS4 screens
Big Stuff Learning4 screens

Verdict

The call

The clearest difference is chart position: memoryOS at #58 against Big Stuff Learning's unranked. On price, update cadence, ads and in-app purchases 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 Big Stuff Learning sells 16 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

memoryOS ships an update every 2 weeks, Big Stuff Learning fortnightly. The most recent releases landed on October 23, 2026 and October 19, 2026 respectively.

Scorecard1 real difference · 10 level
memoryOS versus Big Stuff Learning: the parameters behind the verdict, then further details
ParametermemoryOSBig Stuff Learning
PriceFreeFree
Rating4.9 (17K ratings) — better—
Positive reviews80.4% of reviews—
Number of ratings17K — better—
Update frequencyEvery 2 weeksFortnightly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
Best chart rank#58 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.2 — better16.6
Further details — not scored
Size248 MB120 MB
Age rating4+4+
DeveloperEncoder Inc.Stundner GmbH

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

Big Stuff Learning

Not enough reviews yet to summarise bugs or requests.

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
16 purchases

Big Stuff Learning

Subscriptions10
  • Web Basic$3.991 Month
  • Basic Monthly$9.991 Month
  • Basic$11.991 Year
Show 7 more
  • AI-Basic$12.991 Month
  • AI-Pro$22.991 Month
  • Pro Monthly$22.991 Month
  • Premium Monthly$29.991 Month
  • Basic Yearly$59.991 Year
  • Pro Yearly$149.991 Year
  • Premium Yearly$249.991 Year
One-time6
  • BSL Book$3.99
  • AI Points$4.99
  • Premium Account$9.99
Show 3 more
  • AI Points$24.99
  • BSL Book$34.99
  • BSL Book$44.99

Questions

Is memoryOS free?
memoryOS is free to download, with in-app purchases available.
Is Big Stuff Learning free?
Big Stuff Learning is free to download, with in-app purchases available.
Do memoryOS or Big Stuff Learning have ads?
Neither memoryOS nor Big Stuff Learning shows ads.
Which is updated more often, memoryOS or Big Stuff Learning?
memoryOS ships an update every 2 weeks, and Big Stuff Learning fortnightly. Most recently, memoryOS was updated on October 23, 2026 and Big Stuff Learning on October 19, 2026.

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