Comparison

CrosswordMaker vs memoryOS

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

CrosswordMaker

Design custom crossword puzzles with a flexible grid and cell coloring options. Edit clues in a dedicated view and share your creations with friends via email.

Highlights
  • Create crossword puzzles
  • Random grid generation
  • Cell coloring customization
  • Dedicated clue editor
  • Share puzzles via email
Features
Read full description

You can create crossword puzzles freely. Place characters after the app makes grid randomly. If you can not come up with good word, you can change the color of cells. Clues are edited on another dedicated view. If you finish up a puzzle, you can send it to your friends by e-mail.

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

Screenshots

CrosswordMaker4 screens
memoryOS4 screens

Verdict

The call

The clearest difference is review sentiment: memoryOS at 80% against CrosswordMaker's 21%. memoryOS also leads on rating (4.9 vs 1.3) and ads (none vs shown). CrosswordMaker's advantage is in-app purchases (none vs 28). On price, monetization model and iOS requirement 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. CrosswordMaker asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

memoryOS holds the better App Store score, 4.9 against 1.3. That said, the two scores are not equally well evidenced: memoryOS has 17K ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 21% of CrosswordMaker's written reviews are positive against 80% of memoryOS's.

UpkeepUpdate frequency

CrosswordMaker ships an update every 5 months, memoryOS every 3 weeks. The most recent releases landed on October 5, 2026 and October 14, 2026 respectively.

Scorecard8 real differences · 3 level
CrosswordMaker versus memoryOS: the parameters behind the verdict, then further details
ParameterCrosswordMakermemoryOS
PriceFreeFree
Rating1.3 (11 ratings)4.9 (17K ratings) — better
Positive reviews20.8% of reviews80.4% of reviews — better
Number of ratings1117K — better
Update frequencyEvery 5 monthsEvery 3 weeks — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank—#54 — better
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.615.2 — better
Further details — not scored
Size8 MB248 MB
Age rating4+4+
DeveloperSatoshi HoriguchiEncoder Inc.

Customer experience

CrosswordMaker

All ratings11 ratings
Positive9.1%
Neutral0.0%
Negative90.9%
Written reviews24 reviews
Positive20.8%
Neutral16.7%
Negative62.5%

memoryOS

All ratings16,719 ratings
Positive97.2%
Neutral1.0%
Negative1.8%
Written reviews1,682 reviews
Positive80.4%
Neutral4.9%
Negative14.7%

Bugs and requests

CrosswordMaker

Not enough reviews yet to summarise bugs or 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

In-app purchases

None

CrosswordMaker

No 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

Questions

Is CrosswordMaker free?
CrosswordMaker is free to download, with no in-app purchases.
Is memoryOS free?
memoryOS is free to download, with in-app purchases available.
Which has better reviews, CrosswordMaker or memoryOS?
memoryOS is rated higher. CrosswordMaker averages 1.3 out of 5 from 11 ratings, while memoryOS averages 4.9 from 17K ratings.
Do CrosswordMaker or memoryOS have ads?
CrosswordMaker shows ads; memoryOS does not.
Which is updated more often, CrosswordMaker or memoryOS?
CrosswordMaker ships an update every 5 months, and memoryOS every 3 weeks. Most recently, CrosswordMaker was updated on October 5, 2026 and memoryOS on October 14, 2026.

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