bookend: iPhone vs Android
bookend by iDoc K.K. is on both the App Store and Google Play. Here are both versions together: downloads, users, revenue, ratings and chart positions, store by store with totals.
Rating
4.3 ★
2.5k ratings, both stores
Measured
Best rank now
#108
iPhone · 
Books Free
Books FreeMeasured
App Store
App details
App ID
410797241
Publisher
iDOC.K.K
On the store since
May 2011
15 years on the store
Minimum OS
iOS 15.6+
iPhone 6s and later
Devices
iPhone · iPad
Universal purchase
Content rating
9+
3 content notes below
Languages
2
EN JA
Size
55 MB
Also listed in
Books
Content notesInfrequent/Mild Horror/Fear ThemesInfrequent/Mild Cartoon or Fantasy ViolenceInfrequent/Mild Mature/Suggestive Themes
Google Play
App details
App ID
com.bookend.app
Publisher
bookend
bookend downloads & installs
Both stores, worldwide. Bands are open; exact numbers are free with an account.
| Store | Downloads / day | Lifetime installs |
|---|---|---|
| iPhone | – | 100k+ |
| Google Play | – | – |
| Total | – | 100k+ Confidence |
How this is calculated
iPhone: chart positions and rating growth per country, anchored on its own Android downloads; lifetime from ratings worldwide × installs per rating. Google Play: the daily change in its exact install count. The total adds every store.
Where it ranks now
Both stores, across every country we track.
Ratings
Both stores. Store data, measured.
| Store | Rating | Ratings |
|---|---|---|
| App Store | 4.3 ★ | 2.5k |
| Google Play | 4.9 ★ | – |
| Both stores | 4.3 ★ weighted by ratings | 2.5k |
About bookend
The bookend app is optimized for the iPad and iPhone
providing users with the ability to read bookend books using a
beautiful, easy-to-use interface.
You can discover and read book contents that are bought in this
application with iPad and iPhone. You can share contents
with other bookend applications on other devices by simply registering
your mail address into bookend Cloud Library. You will see more and more
bookend contents coming.
Get the best reading experience available on your iPad and iPhone.
* Easy flick to turn pages
* Read in portrait or landscape mode
* Easy thumbnail view for quick jump to page
* View both single and center spread pages
* Pinch and zoom pages in books
* User interface tailored to the size, look, and feel of the iPad and iPhone
* Bookshelf view with scrolling support and show additional bibliographic data
providing users with the ability to read bookend books using a
beautiful, easy-to-use interface.
You can discover and read book contents that are bought in this
application with iPad and iPhone. You can share contents
with other bookend applications on other devices by simply registering
your mail address into bookend Cloud Library. You will see more and more
bookend contents coming.
Get the best reading experience available on your iPad and iPhone.
* Easy flick to turn pages
* Read in portrait or landscape mode
* Easy thumbnail view for quick jump to page
* View both single and center spread pages
* Pinch and zoom pages in books
* User interface tailored to the size, look, and feel of the iPad and iPhone
* Bookshelf view with scrolling support and show additional bibliographic data
bookend iPhone
bookend is #108 in Books Free in Japan and charting in 1 of 30 countries we track.
Updated 24 Oct 2026 · rankings refresh through the day
DeveloperiDoc K.K.
CategoryBooks
PriceFree
Released
Rating★ 4.3 (2.5k)
Version8.2.17
Age rating9+
First seen by us 28 Sep 2026
28 Sep 2026Installs (est.)100k+ worldwide
Rating
4.3 ★
2.5k ratings
Measured
Best rank now
#108
Books FreeMeasured
bookend on the App Store
App details
App ID
410797241
Publisher
iDOC.K.K
On the store since
May 2011
15 years on the store
Minimum OS
iOS 15.6+
iPhone 6s and later
Devices
iPhone · iPad
Universal purchase
Content rating
9+
3 content notes below
Languages
2
EN JA
Size
55 MB
Also listed in
Books
Content notesInfrequent/Mild Horror/Fear ThemesInfrequent/Mild Cartoon or Fantasy ViolenceInfrequent/Mild Mature/Suggestive Themes
bookend downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. iPhone downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Japan | BooksFree | #108 |
Apps near bookend on the chart
Books Free, around #108.
Ratings
App Store, worldwide.
Rating
4.3 ★
2.5k ratings
Measured
Ratings
2.5k
Measured
About bookend
The bookend app is optimized for the iPad and iPhone
providing users with the ability to read bookend books using a
beautiful, easy-to-use interface.
You can discover and read book contents that are bought in this
application with iPad and iPhone. You can share contents
with other bookend applications on other devices by simply registering
your mail address into bookend Cloud Library. You will see more and more
bookend contents coming.
Get the best reading experience available on your iPad and iPhone.
* Easy flick to turn pages
* Read in portrait or landscape mode
* Easy thumbnail view for quick jump to page
* View both single and center spread pages
* Pinch and zoom pages in books
* User interface tailored to the size, look, and feel of the iPad and iPhone
* Bookshelf view with scrolling support and show additional bibliographic data
providing users with the ability to read bookend books using a
beautiful, easy-to-use interface.
You can discover and read book contents that are bought in this
application with iPad and iPhone. You can share contents
with other bookend applications on other devices by simply registering
your mail address into bookend Cloud Library. You will see more and more
bookend contents coming.
Get the best reading experience available on your iPad and iPhone.
* Easy flick to turn pages
* Read in portrait or landscape mode
* Easy thumbnail view for quick jump to page
* View both single and center spread pages
* Pinch and zoom pages in books
* User interface tailored to the size, look, and feel of the iPad and iPhone
* Bookshelf view with scrolling support and show additional bibliographic data
Latest updates
8.2.17
- Fixed an issue where annotations were not displayed in iOS 27.
- Fixed an issue where text wouldn't fit entirely in the title bars of the “Announcements List,” “Labels List,” and other screens; users can now scroll to view the full text.
- PDF Viewer: show page labels instead of page numbers on the bookmarks list.
More from iDoc K.K.
Bookend Android
Bookend is #171 in Books & Reference Free on Google Play in Turkey and charting in 1 of 23 countries we track.
Updated 24 Oct 2026 · rankings refresh through the day
Developerbookend
Category–
PriceFree
Released–
Installs–
Rating★ 4.9 (0)
Updated–
Content rating–
Rating
4.9 ★
0 ratings
Measured
Best rank now
#171
Books & Reference FreeMeasured
Bookend on Google Play
App details
App ID
com.bookend.app
Publisher
bookend
Where it ranks on Google Play
Every top 200 chart it appears in across 23 countries.
| Country | Charts | Rank |
|---|---|---|
| Turkey | Books & ReferenceFree | #171 |
Apps near Bookend on the chart
Books & Reference Free, around #171.
Ratings
Google Play, worldwide.
Rating
4.9 ★
0 ratings
Measured
Ratings
0
Measured