Comparison

memoryOS vs CharmXP

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

CharmXP

Practice real-life social and professional interactions with an AI coach. Get instant feedback on your performance, learn communication skills, and track your progress to build confidence.

Highlights
  • AI role-play scenarios
  • Interactive communication lessons
  • Instant performance reports
  • XP and level-up system
  • Progress tracking
  • Voice and video role-play
Features
Read full description

UNLOCK UNSTOPPABLE CONFIDENCE CharmXP turns nerve-racking real-life moments into low-stakes practice rounds—powered by cutting-edge AI. Master professional networking, nail job interviews, and build social confidence before you ever set foot in the room. PLEASE NOTE: CharmXP requires an active subscription to access its advanced features, including real-time AI coaching, the full scenario library, and advanced performance analytics. WHY CHARMXP? - AI Practice Scenarios (Subscription Required) – Choose from various social and professional situations (interviews, networking events, or social connections) and practice with a lifelike AI that adapts to your tone and conversation flow. - Interactive Lessons (Subscription Required) – Access bite-sized modules on charisma, storytelling, active listening, and body language to learn and then instantly apply. - Instant Performance Reports (Subscription Required) – After every session, receive a detailed heat-map of your performance to see where you excelled in clarity, empathy, and engagement. - XP & Level-Ups – Earn XP as you perform and advance through harder scenarios as your skills skyrocket. - Progress Tracker – Watch your confidence score climb week by week and celebrate wins that matter in the real world. PERFECT FOR * Professionals looking to sharpen their networking and presentation skills. * Job seekers who need realistic interview preparation. * Entrepreneurs and sales pros refining their pitch and communication style. * Anyone looking to overcome social struggles through private, safe practice. HOW IT WORKS 1. Choose a Scenario – Select from professional or social missions. 2. Talk It Out – Engage in voice based practice with the AI coach. 3. Get Your Report – Pinpoint your strengths and areas for growth with data-driven feedback. 4. Master the Skills – Complete lessons to level up your social intelligence. 5. Earn XP & Repeat – Advance through missions as your real-world confidence reaches new heights. WHY USERS LOVE IT - “Felt like a real interview. Got the job two weeks later.” - “Social confidence through the roof.” - “Every sales objection drilled before the call—closed the deal.” SUBSCRIPTION INFORMATION CharmXP may offer a free trial for new users depending on eligibility. After the trial period, an active monthly or annual subscription is required to access the full catalog of lessons, AI coaching scenarios, and advanced analytics. - In-App Purchases: Premium Monthly, Premium Annual, Premium Weekly - Privacy Policy: https://fullbricks.com/charmxp/privacy - Terms and Conditions: https://charmxp.com/policies/terms-and-conditions.pdf Ready to own every conversation? Download CharmXP now and start levelling up today.

Screenshots

memoryOS4 screens
CharmXP4 screens

Verdict

The call

The clearest difference is review sentiment: memoryOS at 80% against CharmXP's 46%. memoryOS also leads on rating (4.9 vs 4.4) and chart position (#63 vs 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 CharmXP sells 14 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 4.4. That said, the two scores are not equally well evidenced: memoryOS has 17K ratings behind it against 2.6K, so its average is the more settled of the two. Written reviews point the same way: 80% of memoryOS's written reviews are positive against 46% of CharmXP's.

UpkeepUpdate frequency

memoryOS ships an update every 2 weeks, CharmXP every 3 weeks. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 6 level
memoryOS versus CharmXP: the parameters behind the verdict, then further details
ParametermemoryOSCharmXP
PriceFreeFree
Rating4.9 (17K ratings) — better4.4 (2.6K ratings)
Positive reviews80.3% of reviews — better45.7% of reviews
Number of ratings17K — better2.6K
Update frequencyEvery 2 weeks — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#63 — better—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.2 — better16.4
Further details — not scored
Size231 MB133 MB
Age rating4+17+
DeveloperEncoder Inc.FullBricks LLC

Customer experience

memoryOS

All ratings16,902 ratings
Positive97.2%
Neutral1.0%
Negative1.8%
Written reviews1,709 reviews
Positive80.3%
Neutral4.9%
Negative14.8%

CharmXP

All ratings2,563 ratings
Positive84.1%
Neutral6.2%
Negative9.8%
Written reviews313 reviews
Positive45.7%
Neutral4.2%
Negative50.2%

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

CharmXP

From 2.6K App Store ratings

What we love

  • 👍 Helps build confidence
  • 🚀 Effective communication practice
  • 💡 Unique AI-driven role-play
  • 👍 Engaging and fun to use
  • 👍 Personalized feedback and progress

Room to improve

  • 🐛 Some users report issues with payment and trial period
  • 🤖 AI responses can feel robotic at times

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

CharmXP

Reported bugs

1 issue
  • Occasional app crashes or freezes

Requested features

2 requests
  • More diverse conversation topics
  • Expanded role-play scenarios beyond dating and interviews

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
14 purchases

CharmXP

Subscriptions11
  • Charm XP Pro$6.997 Days
  • Charm XP Pro3 Days trial$6.997 Days
  • Charm XP Pro$8.997 Days
Show 8 more
  • Charm XP Pro$12.997 Days
  • Charm XP Pro$19.991 Month
  • Charm XP Pro, 1 Month$24.991 Month
  • premium$39.493 Months
  • Charm XP Pro$39.991 Year
  • Charm XP Pro$49.991 Year
  • Charm XP Pro7 Days trial$79.991 Year
  • Charm XP Pro3 Days trial$87.901 Year
One-time3
  • premium$3.79
  • premium$9.79
  • premium$19.49

Questions

Is memoryOS free?
memoryOS is free to download, with in-app purchases available.
Is CharmXP free?
CharmXP is free to download, with in-app purchases available.
Which has better reviews, memoryOS or CharmXP?
memoryOS is rated higher. memoryOS averages 4.9 out of 5 from 17K ratings, while CharmXP averages 4.4 from 2.6K ratings.
Do memoryOS or CharmXP have ads?
Neither memoryOS nor CharmXP shows ads.
Which is updated more often, memoryOS or CharmXP?
memoryOS ships an update every 2 weeks, and CharmXP every 3 weeks. Most recently, memoryOS was updated on November 1, 2026 and CharmXP on October 30, 2026.

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