Comparison

i vs Memorizing application

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

Head to head
About

i

This app allows users to hide text in study materials using a filter, mimicking a red sheet for effective memorization. It supports photos and PDFs, enabling studying anytime, anywhere with just a smartphone.

Highlights
  • Hide text with red filter effect
  • Study photos and PDFs
  • Add check marks for progress
  • Efficient study with navigation
  • Use anytime, anywhere
Read full description

【Ranked #1 in the Education category (free)】 【Over 1 million downloads】 Featured in various media: ・Fuji TV "Minna no News (2017/2/9)": Red-sheet generation stunned! A revolution in memorization methods ・Benesse Manapla: Make high school life even more fun! 3 useful apps ・Nikkei Trendy Net "TODA Satoru’s Deep-Dive Report on Gadgets": How working adults use iPad and handwriting apps for learning i-Memorization Sheet is an app for memorization study that hides words, sentences, dates, etc. using a filter so you can study them. The app uses image analysis to reproduce the same effect as using a real red filter. Therefore, red text in reference books can be hidden simply by photographing it. You can also import entire reference books by converting them to PDF. With just an iPhone, you can study anytime, anywhere. 【Benefits of i-Memorization Sheet】 - Study anytime, anywhere—e.g., easily memorize with one hand on the train. - Carry as many pages as you want just by bringing your smartphone. - Disappears better than real red sheets. All reddish colors are hidden. Green is fine if it's a fluorescent highlighter. - You can add check marks anywhere. Double-tap where you want to place a mark. There is also a function to jump to the next check mark, making studying very efficient. 【Supported materials】 - Photos and PDFs can be used. 【Pricing】 You can use the app for free for up to 10 pages in total. If you want to use more files/pages, please purchase an add-on. Ads are displayed, but purchasing the add-on can disable them.

About

Memorizing application

Read full description

◇Completely Free No additional Charge◇            Cover red letters with red sheet and memorize. Cover the texts highlighted in red with green sheet and memorize. We realize that the studying method what needs a textbook and a notebook is now possible with smart phone. This Application is suitable for memorizing things at any pockets of time, such as while commuting, waiting time, while eating and hanging around on bed in the morning or evening. Very simple operation ① Capture images (It doesn’t matter before or after highlighting!) ② Check the points that you want to memorize with the highlighter in the application. ③ Try to memorize with covering by sheet.

Screenshots

i3 screens
Memorizing application4 screens

Verdict

The call

The clearest difference is update cadence: i at every 6 days against Memorizing application's monthly. Memorizing application's advantage is iOS requirement (15.6 vs 18.0). On price, ads, in-app purchases 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. i sells 10 one-off in-app purchases and Memorizing application sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

i ships an update every 6 days, Memorizing application monthly. The most recent releases landed on September 22, 2026 and September 20, 2026 respectively.

Scorecard2 real differences · 8 level
i versus Memorizing application: the parameters behind the verdict, then further details
ParameteriMemorizing application
PriceFreeFree
Rating4.2 (10 ratings) — better—
Positive reviews42.9% of reviews—
Number of ratings10 — better—
Update frequencyEvery 6 days — betterMonthly
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.015.6 — better
Further details — not scored
Size67 MB5 MB
Age rating4+4+
DeveloperBrainApp LLCfunspire, Inc.

In-app purchases

10 purchases

i

One-time10
  • i-Memorize Sheet Remove ADs Option$0.99
  • imc00010$0.99
  • imc00020$0.99
Show 7 more
  • i-Mem-Contents imc00030$0.99
  • i-Mem-Contents imc00040$0.99
  • i-Mem-Contents imc00010$0.99
  • i-memorize Sheet File-Limit release add-on$2.99
  • i-memorize Sheet PDF page-Limit release add-on$4.99
  • Pro licence(campaign)$5.99
  • i-memorize Sheet Limit release add-on$6.99
1 purchases

Memorizing application

One-time1
  • Remove Advertisement$2.99

Questions

Is i free?
i is free to download, with in-app purchases available.
Is Memorizing application free?
Memorizing application is free to download, with in-app purchases available.
Do i or Memorizing application have ads?
Both i and Memorizing application show ads.
Which is updated more often, i or Memorizing application?
i ships an update every 6 days, and Memorizing application monthly. Most recently, i was updated on September 22, 2026 and Memorizing application on September 20, 2026.

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