Comparison

memoryOS vs Fluent Ear

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

Fluent Ear

This app focuses on improving your comprehension of real Mexican Spanish conversation through listening exercises. It offers structured campaigns, longer dialogues, and personalized phrase review to help you understand spoken Spanish faster.

Highlights
  • Interactive ear training campaign
  • Longer Spanish dialogues and monologues
  • Personalized phrase and word review
  • Practice with real people's voices
  • Real-time Spanish to English translation support
  • Mexican Spanish focus
Features
Read full description

Fluent Ear helps you understand real Mexican Spanish conversation—fast—through listening, not endless textbook drills. If you already know some Spanish but freeze when people talk (family, friends, the table next to you), this app is built for that gap. PLAY — THE MAIN CAMPAIGN Level up worlds of ear training: who speaks, who receives it, past vs present, name the verb, social markers, and more. Earn stars, unlock worlds, and chase a perfect run. Clear a level a day and keep a Play streak. SCENES — LONGER REAL SPANISH Training-zone monologues and dialogues for longer stretches of speech. Ease levels when you need a ramp. Listen first, rate what you understood, train for the campaign. WORDS — PHRASES, NOUNS, VERBS Save what you hear from lessons into banks. Review due items by listening first, then reveal meaning—so Spanish lands by ear, not only by reading. FAMILY — REAL PEOPLE, REAL VOICES Add the people you care about. Upload or record voice notes and practice with the Spanish you actually need to understand at home. LIVE — PHONE ON THE TABLE Realtime Spanish → English while people talk around you. Use it for dinner, travel, and messy room sound—not only a quiet study desk. WHY FLUENT EAR • Ear-first design: listen, choose, advance • Mexican Spanish in natural family & social language • ChatGPT voice for clear lesson audio when online • Progress you can feel: stars, worlds, daily quests • Training that wraps around Play—not a random pile of tools HOW TO USE IT (10–20 MIN) 1. Open Play and continue your campaign. 2. Optional: one Scene for longer listening. 3. Review Words or a Family note when something stuck. 4. Use Live when you want support in the moment. Fluent Ear is a practice tool for comprehension and confidence. It does not replace a teacher or guarantee fluency overnight—but it is built to make real Spanish less murky, one focused session at a time. Download and start World 1 in minutes.

Screenshots

memoryOS4 screens
Fluent Ear4 screens

Verdict

The call

The clearest difference is in-app purchases: Fluent Ear at none against memoryOS's 28. memoryOS's advantage is ratings volume (17K vs 1) and chart position (#56 vs unranked). On price, rating, 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. Fluent Ear asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for memoryOS against 5.0 for Fluent Ear. That said, the two scores are not equally well evidenced: memoryOS has 17K ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

memoryOS ships an update every 3 weeks, Fluent Ear monthly. The most recent releases landed on October 15, 2026 and September 30, 2026 respectively.

Scorecard4 real differences · 7 level
memoryOS versus Fluent Ear: the parameters behind the verdict, then further details
ParametermemoryOSFluent Ear
PriceFreeFree
Rating4.9 (17K ratings)5.0 (1 ratings) — better
Positive reviews80.5% of reviews—
Number of ratings17K — better1
Update frequencyEvery 3 weeks — betterMonthly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank#56 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.215.0 — better
Further details — not scored
Size248 MB9 MB
Age rating4+12+
DeveloperEncoder Inc.Peter Davies

Customer experience

memoryOS

All ratings16,719 ratings
Positive97.2%
Neutral1.0%
Negative1.8%
Written reviews1,684 reviews
Positive80.5%
Neutral4.9%
Negative14.7%

Fluent Ear

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

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

Fluent Ear

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
None

Fluent Ear

No in-app purchases

Questions

Is memoryOS free?
memoryOS is free to download, with in-app purchases available.
Is Fluent Ear free?
Fluent Ear is free to download, with no in-app purchases.
Which has better reviews, memoryOS or Fluent Ear?
Fluent Ear is rated higher. memoryOS averages 4.9 out of 5 from 17K ratings, while Fluent Ear averages 5.0 from 1 ratings.
Do memoryOS or Fluent Ear have ads?
Neither memoryOS nor Fluent Ear shows ads.
Which is updated more often, memoryOS or Fluent Ear?
memoryOS ships an update every 3 weeks, and Fluent Ear monthly. Most recently, memoryOS was updated on October 15, 2026 and Fluent Ear on September 30, 2026.

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