Comparison

memoryOS vs CES

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 with interactive lessons and a 3D virtual mind palace game. This app uses scientifically proven techniques like spaced repetition to boost long-term memory storage and knowledge retention. It's designed to make memorization skills joyful and effective for everyone.

Highlights
  • Interactive memory lessons
  • 3D Virtual Mind Palaces
  • Spaced repetition system
  • Gamified learning
  • Memorize names, lists, numbers, and more
  • Advanced study techniques
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

CES

Features
Read full description

Where students become founders. CES is the official app of the Cathedral Entrepreneurship Society — the student-run entrepreneurship society of The Cathedral & John Connon School, Mumbai. It brings our programmes, stories, and alumni network to iPhone and iPad in a fast, beautiful, native experience. We exist to help students think, build, and lead like founders — turning curiosity into ventures, and ideas into impact. WHAT YOU CAN DO • Changemakers of Tomorrow — our flagship programme. Form a team, write your venture pitch, and submit it to the Organizing Committee, then track invitations, reviews, and decisions as your idea takes shape. • CES Connect — get first-hand advice from alumni working across tech, finance, law, and more. Browse the answered-question library, filter by sector or topic, search, and ask your own question. Alumni get a dedicated inbox to answer students and follow up. • The Venture — read every issue of our magazine in a clean, built-in reader. • Projects — explore live, student-led ventures and open their websites to learn more. • Visionaries — meet the founders, investors, and leaders who join us in conversation, and suggest a speaker you'd love to hear. • Our Team — get to know the Organizing Committee behind it all. DESIGNED FOR iPHONE & iPAD • A native app — a tab bar on iPhone, a sidebar on iPad. • Light and Dark Mode, Dynamic Type, and full support for Reduce Motion. • Pull-to-refresh, haptics, and system share built in. • Push notifications when an alum answers your question, when a student asks you one, or when a new issue of The Venture is out — each opening straight to the right screen. PRIVATE BY DESIGN • No third-party SDKs and no trackers — only Apple frameworks. • Students sign in with their school Google account; alumni use a secure email and password, stored safely in the Keychain. • Prefer to look around first? Continue as a guest to browse the public app. From the Cathedral Entrepreneurship Society. Learn more at cathedralentrepreneurship.org.

Screenshots

memoryOS4 screens
CES3 screens

Verdict

The call

The clearest difference is in-app purchases: CES at none against memoryOS's 10. memoryOS's advantage is chart position (#54 vs unranked) and iOS requirement (15.2 vs 17.0). On price, update cadence, ads and device support 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 9 in-app purchases, starting at $5.99 per month. CES asks for nothing beyond the download.

UpkeepUpdate frequency

memoryOS ships an update fortnightly, CES every 3 weeks. The most recent releases landed on November 12, 2026 and November 5, 2026 respectively.

Scorecard3 real differences · 8 level
memoryOS versus CES: the parameters behind the verdict, then further details
ParametermemoryOSCES
PriceFreeFree
Rating4.9 (17K ratings) — better—
Positive reviews80.2% of reviews—
Number of ratings17K — better—
Update frequencyFortnightly — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
Best chart rank#54 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.2 — better17.0
Further details — not scored
Size232 MB4 MB
Age rating4+4+
DeveloperEncoder Inc.Jaiveer Talwar

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

CES

Not enough reviews yet to summarise bugs or requests.

In-app purchases

9 purchases

memoryOS

Subscriptions9
  • Student Monthly Plan7 Days trial$5.991 Month
  • Essential Weekly Plan7 Days trial$6.997 Days
  • Essential Monthly Plan$15.991 Month
Show 6 more
  • Expert Monthly Plan$27.991 Month
  • Essential Annual Plan7 Days trial2 variants$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
None

CES

No in-app purchases

Questions

Is memoryOS free?
memoryOS is free to download, with in-app purchases available.
Is CES free?
CES is free to download, with no in-app purchases.
Do memoryOS or CES have ads?
Neither memoryOS nor CES shows ads.
Which is updated more often, memoryOS or CES?
memoryOS ships an update fortnightly, and CES every 3 weeks. Most recently, memoryOS was updated on November 12, 2026 and CES on November 5, 2026.

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