SideBooks - PDF&Comic viewer

3.15K reviews
Content rating
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About this app

SideBooks is a high performance, high speed PDF&Comic viewer that allows you to enjoy reading with the feel of actual paper.


Curl animation that simulates the actual turning of paper pages has been added to the standard page slide function.
Supports viewing from 2 directions, documents that open left to right and right to left. It provides the optimal environment for viewing any book.
All zoom rates have been optimized providing high speed, dynamic screen display.
An infinite hierarchy of folders can be created, moved, deleted, renamed, etc. using the enhanced bookshelf management function.
Real visual bookshelf function.
Files can be imported by 3 methods, Network transfer through Dropbox, USB transfer through PC and direct transfer from other applications.
Books can be protected so others cannot view them by using the password protected locking function.


*Brightness Adjustment.
*Screen rotates to match the orientation of the device
*Screen Rotation Lock
*Password Protected Start-up Lock

*Support PDF,ZIP,CBZ,RAR and CBR format
*Page Turning: Choose from slide or curl
*Viewing Directions: Choose from opening left to right / right to left
*Page Spacing: Choose form wide / narrow / none
*Facing Pages: Choose the pair of facing pages by setting the cover to on or off
*Trim function within the range of page display
*Cache pre-read function for the previous and next pages
*Set the display for each book and remember the page number of the last page read
*Text search function (list display type)
*Contents function (page images, PDF bookmarks)
*Bookmark function (with editable memos)
*In-page link function
*Link to outside URL function
*Page turning function using tap or swipe
*Expansion / Contraction function using pinch and double tap
*Viewing of encrypted PDF files with password protection
*Display / non-display of statusbar when reading

*Display form: Choose form list bookshelf / visual bookshelf
*Cover editing function (corresponds to the trim)
*File editing function: create, move, delete
*Bookmark list
*Network transfer through Dropbox
*USB transfer through PC
*Direct transfer from other applications

Special thanks to,
"Give My Regards to Black Jack"
Manga on Web
Updated on
Feb 3, 2022

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
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3.15K reviews
john argue
May 11, 2020
The more I use ,the more I like. I found a easier way to add pdf to sidebook is after downloading a PDF,click open, then choose sidebook app. Then it's automatically added. Otherwise need to manually add each pdf using a file manager app. Place pdf in correct location for sidebook to recognize.Otherwise, I like the page effects, also can trim pages to fit better, draw or underline words, bookmark a page,switch magazine quick.etc. great app 👍
12 people found this review helpful
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Countess Ada
May 28, 2022
The app is excellent and has what I've been looking for in a reading app. However, the storage process is difficult and frustrating. I can't import my ebooks to the home folder, and if I switch the home folder, it messes the settings up. Please revise this. Thanks.
3 people found this review helpful
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Don Lim
June 23, 2022
This is probably the best ebook / pdf reader I used so far. It's easy to use, and responsive. Just need to highlight a bug, which forced closed which you try to use the write on screen function. Hope it will be fixed soon
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What's new

SideBooks 10th Anniversary Information.
Added a function to change bookshelf accessories.
Other minor bug fixes and improved stability.