SideBooks 4+

PDF&Comic Viewer

Tatsumi-system Co., Ltd.

Designed for iPad

    • 4.7 • 83 Ratings
    • Free
    • Offers In-App Purchases



SideBooks is a high performance, high speed PDF 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 3 directions, documents that open left to right, right to left and vertically. 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 that corresponds to back cover style display.
Files can be imported by 3 methods, Network transfer through Dropbox, USB transfer through iTunes and direct transfer from other applications.
Books can be protected so others cannot view them by using the password protected locking function.
This is a universal application that operates on the iPhone, iPod Touch and iPad.


*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 / vertically
*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 (also supports hierarchy type)
*Bookmark function (with editable memos)
*Edit handwritten notes
*Send to other applications (Open-In)
*Send by email
*Printing function (Air Print)
*In-page link function
*Link to outside URL function (built-in browser / Safari / Printing)
*Display / Don't Display link buttons
*Page turning function using tap or swipe
*Expansion / Contraction function using pinch and double tap (1-1024x zoom)
*Viewing of encrypted PDF files with password protection
*Display / non-display of statusbar when reading

*Display form: Choose form list bookshelf / visual bookshelf
*Function to set theme of visual bookshelf with each folder
*Bookshelf thema extension pack (Add-On)
*Cover editing function (corresponds to the trim)
*File editing function: create, move, delete, setting for all books in folder
*Bookmark list
*Reading history list
*Unread list
*Edit of mark choose form already read / unread
*Book name search function
*Network transfer through Dropbox
*USB transfer through iTunes
*Direct transfer from other applications

Special thanks to,
"Give My Regards to Black Jack"
Manga on Web

What’s New

Version 2.83.23

*Minor bug fixes.

Ratings and Reviews

4.7 out of 5
83 Ratings

83 Ratings

coolfizzin ,

Best PDF Reader for my iPad Pro

I am an academic, so I do a lot of reading for work: journal articles, students’ papers, etc. Adobe and other PDF readers tend to only frustrate me, but SideBooks is incredibly useful and intuitive. Documents look great both in portrait and two-up landscape mode. It also supports text annotations, bookmarks, and highlighting, with plenty of options. You can have it decrease the margins to fit the pages better, and you can change how it shows the cover of the document on your bookshelf.

The page turning is probably my favorite part. Most PDF readers turn the page if you tap the screen at all. That is really annoying and makes it very easy to lose your place when you’re studying and trying to make annotations. SideBooks requires you to drag from the side of the screen, and it uses a beautiful and smooth page-turning animation. This gives more of a feel of reading a tangible, physical text.

Overall it’s very easy and smooth to use, but it has more flexibility than your average iPad app. All of this is free, with no ads either, but it’s so good I’d be willing to pay for it.

The only thing it lacks that it could really use is a night mode. You can of course simply invert the screen colors using iPad’s accessibility features, but a night mode would work more smoothly. Nevertheless, this PDF reader is miles ahead of the competition.

Abe T. ,


i’ve been looking for an app all night that had specific qualities. I was willing to lose out on a few features if it had the others but this app hit all my requirements to the T. It can open RAR, Zip. transfer from a cloud service or itunes file sharing. It can read right to left, up to down, and obv left to right. it has no ads, not a one. it has a pleasant book shelf and it will make the cover of the book the cover on the shelf. it doesn’t turn multiple pages just to let u change an option, instead you have to slide your finger halfway across the screen to turn and tap to pull up the options. if you’re looking for something to read your comics or manga on, i guarantee you this app is the one u want.

grag ,

My favorite ereader.

I looked for a long time to find an ereader that has all the benefits of digital reading and reads like a regular old book. I’ve used this app for a year and i love it. The only issues i’ve run into are when i’ve tried to read huge textbook pdfs (gray’s anatomy, principles of internal medicine, or principles of neural science [causes the app to crash], i put all my huge textbooks in kindle) but i’ve read all of my regular pdf medical school textbooks in this app and it has been a dream. Thanks!

App Privacy

The developer, Tatsumi-system Co., Ltd., 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

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