memoryOS vs Paladin
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Interactive bite-sized lessons
- Virtual Mind Palaces game
- Spaced repetition system
- Scientifically proven techniques
- Improve knowledge retention
- Memorize diverse information
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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
Paladin
Explore history through short, interactive lessons and engaging game elements. Learn about historical figures with animations, quizzes, and collectible characters. Make history fun and memorable, even with limited time.
- Short, curated historical lessons
- Interactive and animated content
- Quizzes to test knowledge
- Collectible historical character cards
- Gamified learning with leveling up
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Explore History in a Whole New Way! Do you want to understand history but don’t have the time for lengthy books or documentaries? With Paladin: Learn History, you can uncover the stories of history’s greatest personalities in just 5 minutes! Our app combines the power of interactive learning with the excitement of game elements to make history fun, engaging, and easy to remember. Key Features: • Short, Curated Lessons: Discover captivating stories from history, centered around key figures like Cleopatra, Abraham Lincoln, and more. Each lesson is designed to be concise yet informative, giving you a deep understanding of important historical events and personalities. • Interactive and Animated Content: History comes to life with our animated lessons! Engage with interactive elements that help you visualize the past, making learning both fun and memorable. • Quizzes to Test Your Knowledge: Each lesson is followed by a quiz that challenges your understanding. Test your knowledge and see how well you’ve absorbed the material. • Collectible Characters: As you progress, unlock collectible characters representing historical figures. Each character comes with its own unique backstory, offering additional insights into history. • Game Elements: Level up as you learn! The more you engage with the app, the more characters and content you can unlock, keeping the learning experience fresh and exciting. Why Choose Paladin? Unlike traditional history apps, Paladin: Learn History is designed with friendliness and visual engagement in mind. We focus on making learning accessible, quick, and enjoyable. With our interactive approach and game-like features, history is no longer a subject to dread but a story to be explored and enjoyed. What Users Are Saying: “Paladin has turned my boring commutes into exciting history lessons! I love how easy it is to learn and retain information.” - Alex M. “The animations and quizzes make learning history feel like a game. It’s so much more fun than reading a textbook!” - Sarah T. Download Now and Begin Your Journey Through History! Don’t just read about history—experience it! Download Paladin: Learn History today and start unlocking the secrets of the past, one story at a time. Read more about our terms and conditions here: Terms of service: https://learnpaladin.com/terms-of-service Privacy policy: https://learnpaladin.com/privacy-policy
Screenshots
Verdict
The clearest difference is review sentiment: memoryOS at 80% against Paladin's 20%. memoryOS also leads on rating (4.9 vs 4.6). Paladin's advantage is update cadence (every 6 days vs every 2 weeks). On price, ratings volume, 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
Both are free to download. memoryOS sells 23 in-app purchases, starting at $3.99 per 7 days and Paladin sells 15 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.
memoryOS holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 17K and 24K respectively. Written reviews point the same way: 80% of memoryOS's written reviews are positive against 20% of Paladin's.
memoryOS ships an update every 2 weeks, Paladin every 6 days. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | memoryOS | Paladin |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (17K ratings) — better | 4.6 (24K ratings) |
| Positive reviews | 80.3% of reviews — better | 19.5% of reviews |
| Number of ratings | 17K | 24K — better |
| Update frequency | Every 2 weeks | Every 6 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | #55 — better | #86 |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.2 — better | 16.4 |
| Further details — not scored | ||
| Size | 231 MB | 165 MB |
| Age rating | 4+ | 12+ |
| Developer | Encoder Inc. | Brainstash, Inc |
Customer experience
memoryOS
Paladin
User reviews
memoryOS
From 17K App Store ratingsWhat 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
Paladin
From 24K App Store ratingsWhat we love
- 👍 Entertaining education
- 👍 Fun and creative way of teaching history
- 👍 Nice approach to learning history
- 👍 Fantastic start, great potential
Room to improve
- 🚫 Lies, not very accurate
- 🚫 Flawed execution, typos and grammatical errors
- 🚫 Misrepresentations of history and outright falsehoods
- 🚫 Biased and oversimplified narratives
- 🚫 Irrelevant quiz questions
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
Paladin
Reported bugs
3 issues- Spelling errors
- Incorrect answers marked as wrong
- Progression issues with retaining new chapter progress
Requested features
4 requests- More in-depth details and stronger vocabulary
- Ability to continue reading at your own pace
- More historical periods, conflicts, and events
- Improved quiz questions directly related to the content
In-app purchases
memoryOS
- Student Weekly Plan$3.997 Days
- Student Monthly Plan7 Days trial$5.991 Month
- Expert Weekly Plan7 Days trial$6.997 Days
Show 17 moreShow fewer
- 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$15.991 Month
- Student 3 Months Plan$19.993 Months
- Expert Monthly Plan$24.991 Month
- Expert Monthly Plan$27.991 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$159.991 Year
- Expert Annual Plan1 Month trial$159.991 Year
- 10 Hearts$0.99
- 10 Loci Coins$2.99
- 50 Loci Coins$14.99
Paladin
- Pro Monthly Subscription$12.991 Month
- Pro 3 Months Subscription$19.993 Months
- Pro 3 Months Subscription$24.993 Months
Show 12 moreShow fewer
- Pro 3 Months Subscription$29.993 Months
- Pro Yearly Subscription$29.991 Year
- Pro Yearly Subscription$39.991 Year
- Pro Yearly Subscription$49.991 Year
- Pro Yearly Subscription7 Days trial$59.991 Year
- Pro Yearly Subscription$59.991 Year
- Pro Yearly Subscription7 Days trial$69.991 Year
- Pro Yearly Subscription1 Year trial3 variants$79.991 Year
- Pro Yearly Subscription$79.991 Year
- Pro Yearly Subscription7 Days trial$89.991 Year
- Pro Yearly Subscription$89.991 Year
- Pro Yearly Subscription7 Days trial$99.991 Year







