You can study to memorize words or sentences by masking them with drawing line.

√ Image file, pdf, text file available

√ Color of masking line changes basing correct answer percentage

√ Available as answer insert type

√ Can track marks only by one-handed operation

√ Assist to draw for masking by automatic adjustment (when use pdf)
and angle fixing

√ Can execute batch masking using searching function or masking table (when use pdf or text)

◉File Import
*From cloud storage (using iOS File app)
*From iOS Photos app or camera in device
*Web page imported with converting to JPEG in this app
*Can create text from blank page

◉Answer Insert
*Available as definition, translation, synonymous words etc.
*Can write text as the answer
*Can relate the answer to iOS dictionary

*Result is recorded per the masking
*Editable results

*Support iPhone and iPad
*Support portrait and landscape mode
*Can manage books (created in this app) using folder
*Share book with other users

*Cannot synchronize between devices using iCloud (Can restore backup data using Dropbox)

What’s New

Version 5.4

-Available a function of website capture using WebCapture app

Ratings and Reviews

4.5 out of 5
6 Ratings

6 Ratings

dukebuki ,


Let me give this 5 stars. “Word masking” has been supporting my memorization in great deal. How I find it great and effective is the “grouping system” that makes this application entirely different from other similar apps. The grouping system provides for advanced learner’s natural demand to tie up a number of masked markers into one single group. This system incredibly saves time for learning by avoiding clicking each marker each time. I am very sure that no apps can show us as the same effectiveness as this “Word masking” does.

Some users may complain that this app is too complicated to use. I partly agree. Only if one has much patience, can he or she get the fruits of this application, which is very sad. This app, however, has been being updated for many a time. I do hope this app shall be more refined as so much easier to use.

parvizkhan ,


essential for those want memorize pdfs and images

Fake name true review ,

Too difficult to use

I downloaded this app to study for an exam requiring memorization and recognition of textual information. I was not able to figure out how to efficiently import text and mask the information of interest. I tried using the online support and FAQ, but for to poor quality English the information was not helpful. I am deleting this app.

App Privacy

The developer, adicto, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer's privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


Akira Takahashi
8.1 MB

Requires iOS 12.2 or later. Compatible with iPhone, iPad, and iPod touch.


English, Japanese

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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