SideBooks vs ComicReader
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SideBooks
This app offers a high-performance PDF and comic viewer with realistic paper-turning animations. It supports various viewing directions, enhanced bookshelf management, and secure password protection for your documents. Easily import files from multiple sources and enjoy a customizable reading experience.
- Realistic paper curl animation
- Multiple viewing directions
- Enhanced bookshelf management
- Password protection
- Dropbox and iTunes file import
- Supports PDF, ZIP, CBZ, RAR, CBR
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SideBooks is a high performance, high speed PDF viewer that allows you to enjoy reading with the feel of actual paper. =Features= 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. =Functions= Overall: *Brightness Adjustment *Screen rotates to match the orientation of the device *Screen Rotation Lock *Password Protected Start-up Lock Viewer: *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 Bookshelf: *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" SHUHO SATO Manga on Web http://mangaonweb.com
ComicReader
This application is designed for iPad users with extensive comic collections. It offers a polished interface to manage and read thousands of comics without performance issues. Import comics via iTunes, Wi-Fi web server, or the Files app.
- Polished interface
- Handles large comic collections (1500+ comics)
- Background comic import
- No pre-processing required
- Supports CBR, CBZ, and PDF
- Multiple import methods (iTunes, Wi-Fi, Files app)
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Bring your own comics to iPhone and iPad. ComicReader reads PDF, CBZ/ZIP and classic CBR/RAR files. Build a library, enjoy imported comics offline and keep your place as you read. Reading, ordinary imports, browsing, current-page text recognition and optional iCloud sync are free. READ FOR FREE • Import supported files with the system file picker, Finder/iTunes File Sharing, the local-network uploader or WebDAV. • Organize comics into collections and sort them by name, date or reading status. • Zoom into artwork and keep each library comic's read status and current page. • Recognize text on the current page on your device, or use embedded PDF text when available. Select, copy and share the result. Recognition quality varies with language, scan quality and lettering. MADE FOR IPHONE DUO Open the screen for more artwork, then continue on the outer display. Your page and relative zoom stay with you as the display changes. Pages, covers and controls adapt around the active fold. Duo support is free. OPTIONAL ICLOUD SYNC Choose whether to sync library comic files, read status and current page across iPhone, iPad and Mac. Sync stays off until you turn it on and uses your personal iCloud Drive storage. Sufficient storage and an internet connection are required. OPEN AND BROWSE ON YOUR TERMS Visit websites in ComicReader, save shortcuts, keep a normal website session between visits or use a separate private session. Browsing and website-data controls are free. Websites must provide supported downloadable files; sign-in, availability and downloads depend on each site. ComicReader includes no comic catalog, bundled comics or DRM removal. On Mac, open a PDF, CBZ/ZIP or classic CBR/RAR file directly from Finder without importing it. Choose Add to Library when you want a library copy with saved progress and optional iCloud sync. COMICREADER PLUS — ONE OPTIONAL PURCHASE Plus adds tools for readers with larger libraries: • Website Imports download supported files into a chosen collection with validation, duplicate detection and a visible queue. Keep ComicReader open until imports finish. • Comic Search & Quotes builds a persistent text index for the current library comic, searches indexed pages and saves editable quotes linked to their source page. • Reading Lists & Smart Queues arrange a reading order without moving files and gather Continue Reading, Unread and Read Again. • Named Page Bookmarks return to memorable pages. • Image Filters provide Clear Ink, Grayscale and Warm Paper display options without changing the original file. ComicReader Plus is one non-consumable purchase, not a subscription. The App Store shows your local price before purchase. Restore Purchases is available on iPhone, iPad and Mac with the same Apple Account. Existing Plus owners keep access to the current Plus tools. Search covers the current library comic, not the whole library. Search indexes, quotes, lists and bookmarks stay on each device and are not included in iCloud sync. Saved quotes remain readable and shareable if Plus is no longer active. ComicReader is based on ComicFlow and is open source under GPL v3. Bring your own comics; screenshot sample comics are not included.
Screenshots
Verdict
The clearest difference is review sentiment: SideBooks at 74% against ComicReader's 13%. SideBooks also leads on rating (4.6 vs 3.5). ComicReader's advantage is monetization model (free vs free with in-app purchases). On price, ratings volume, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. SideBooks sells 1 one-off in-app purchase and ComicReader sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
SideBooks holds the better App Store score, 4.6 against 3.5. Both are backed by a comparable volume of ratings — 97 and 51 respectively. Written reviews point the same way: 74% of SideBooks's written reviews are positive against 13% of ComicReader's.
SideBooks ships an update every 9 days, ComicReader every 5 days. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.
| Parameter | SideBooks | ComicReader |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (97 ratings) — better | 3.5 (51 ratings) |
| Positive reviews | 73.7% of reviews — better | 12.5% of reviews |
| Number of ratings | 97 — better | 51 |
| Update frequency | Every 9 days | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 33 MB | 3 MB |
| Age rating | 4+ | 17+ |
| Developer | Tatsumi-system Co., Ltd. | Pablo Clemente |
Customer experience
SideBooks
ComicReader
Bugs and requests
SideBooks
Reported bugs
3 issues- Crashes when opening certain PDF files
- Corrupted files cause repeated crashes
- Dropbox integration issues on some devices
Requested features
6 requests- Add support for ePub and other popular formats
- Implement iCloud/Google Drive integration
- Allow manual rearrangement of bookshelf
- Add dark mode and customizable background options
- Improve bookmark and annotation features
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- Implement a more intuitive file management system
ComicReader
Not enough reviews yet to summarise bugs or requests.
In-app purchases
SideBooks
- Thema extension Add-On$0.99
ComicReader
- ComicReader Plus$8.99





