디북 - 올인원 문제집 앱 Android
디북 - 올인원 문제집 앱 is #48 in Education Grossing on Google Play in South Korea and charting in 1 of 15 countries we track.
Updated 27 Sep 2026 · rankings refresh through the day
Developer(주)천재교과서
CategoryEducation
PriceFree
Released–
Installs100k+
Rating–
Updated–
Content ratingEveryone
Best rank now
#48
Education GrossingMeasured
디북 - 올인원 문제집 앱 on Google Play
App details
App ID
com.cjtext.drb.dbookpdf
Publisher
(주)천재교과서
Publisher country
08591
Content rating
Everyone
디북 - 올인원 문제집 앱 downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Google Play shows an exact lifetime install count; downloads per day are its daily change (measured). When Play hasn't refreshed the count, they come from new ratings and Top Free chart positions. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
In-app revenue
Worldwide, what users spend in 디북 - 올인원 문제집 앱 before Apple and Google take their fee.
How this is calculated
Not in an overall Top Grossing chart, only in category charts: each category position is converted to the overall position it corresponds to, then priced on the same rank-to-revenue curve, inside the part of each market the charted apps leave over.
Business model: In-app purchase-led
How 디북 - 올인원 문제집 앱 makes money: subscriptions, one-off purchases and ads.
In-app purchases
One-off purchases
/mo
of revenue
Where it ranks on Google Play
Every top 200 chart it appears in across 15 countries.
| Country | Charts | Rank |
|---|---|---|
| South Korea | EducationGrossing | #48 |
Apps near 디북 - 올인원 문제집 앱 on the chart
Education Grossing, around #48.
About 디북 - 올인원 문제집 앱
Will be your reliable study companion
Dbook service has been opened. (✿˵•́ᴗ•̀˵)
The lightest workbook in the world
Carry only one ‘Dbook’!
1) Easy download of workbook
• You can download and study the workbook you want on your smart device.
2) Provision of writing service
• Take notes directly in the workbook using a variety of pens.
3) Problem & Explanation screen split function
• Explanation that will make you curious as you solve the problem! Study by viewing problems and explanations together using the screen split function.
4) More than 400 elementary/middle/high school workbooks included
• Access Genius Education’s popular textbooks right away.
• Contains the elementary school honor student solution series, math leader series, middle school check-check series, and high school selfie series.
Textbooks will continue to be added in the future.
An all-in-one workbook dbook that contains everything in one app,
Study lightly with just one dbook today :)
thank you
※ Access permission information
[Optional access rights]
-Storage space: Used when opening files to be included in my bookshelf or my PDF
- Notifications: Used to receive notifications of new messages
※ The Dbook app can be installed in Android OS 8.0 or higher. For versions lower than Android 6.0, the app cannot run properly, so we recommend checking whether the operating system of the terminal can be upgraded and upgrading.
[How to withdraw access permission consent]
- Settings > Application > DB > Application Settings > Select permissions > Select Allow or Deny
- Settings > Applications > ‘︙’ > Permission Manager > Select the relevant access rights > Select the app > Select Allow or Deny
Dbook service has been opened. (✿˵•́ᴗ•̀˵)
The lightest workbook in the world
Carry only one ‘Dbook’!
1) Easy download of workbook
• You can download and study the workbook you want on your smart device.
2) Provision of writing service
• Take notes directly in the workbook using a variety of pens.
3) Problem & Explanation screen split function
• Explanation that will make you curious as you solve the problem! Study by viewing problems and explanations together using the screen split function.
4) More than 400 elementary/middle/high school workbooks included
• Access Genius Education’s popular textbooks right away.
• Contains the elementary school honor student solution series, math leader series, middle school check-check series, and high school selfie series.
Textbooks will continue to be added in the future.
An all-in-one workbook dbook that contains everything in one app,
Study lightly with just one dbook today :)
thank you
※ Access permission information
[Optional access rights]
-Storage space: Used when opening files to be included in my bookshelf or my PDF
- Notifications: Used to receive notifications of new messages
※ The Dbook app can be installed in Android OS 8.0 or higher. For versions lower than Android 6.0, the app cannot run properly, so we recommend checking whether the operating system of the terminal can be upgraded and upgrading.
[How to withdraw access permission consent]
- Settings > Application > DB > Application Settings > Select permissions > Select Allow or Deny
- Settings > Applications > ‘︙’ > Permission Manager > Select the relevant access rights > Select the app > Select Allow or Deny