SideBooks vs eBook Flip
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
eBook Flip
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Welcome to eBookflip, the interactive eBook Reader App designed to revolutionize your reading experience! Featuring a stunning new design and a refreshing interface, eBookflip offers an array of features to enhance your learning and engagement. Key Features: Refreshing eBookflip Interface: Experience a modern and user-friendly design that makes reading enjoyable. Offline Access: Download your favorite content and access it anytime, anywhere. Realistic Page Flip: Enjoy amazing page rendering with our page flip feature that mimics the feel of printed books. Flexible Viewing Modes: Switch between portrait and landscape views, with easy thumbnail-based navigation. Social Media Sharing: Share your favorite content effortlessly on social media platforms. Interactive Learning: Seamlessly integrate audio, video, and images for a more engaging learning experience. Read Aloud Capabilities: Listen to your eBooks with our advanced read aloud feature. Comprehensive Search: Utilize full text-based search to find any content within your eBook. Quick Navigation: Jump to any page using the folio ID in the thumbnail view. eBookflip also integrates with the eBook Digital Publishing and Distribution Platform, allowing you to publish and distribute your content with ease. Experience the future of eBook reading with eBookflip. Download now and transform your reading experience!
Screenshots
Verdict
The clearest difference is in-app purchases: eBook Flip at none against SideBooks's 1. SideBooks's advantage is iOS requirement (9.0 vs 12.0). On price, update cadence, ads and device support 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. eBook Flip asks for nothing beyond the download.
SideBooks ships an update every 9 days, eBook Flip every 8 days. The most recent releases landed on October 17, 2026 and October 10, 2026 respectively.
| Parameter | SideBooks | eBook Flip |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (97 ratings) — better | — |
| Positive reviews | 73.7% of reviews | — |
| Number of ratings | 97 — better | — |
| Update frequency | Every 9 days | Every 8 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 32 MB | 109 MB |
| Age rating | 4+ | 4+ |
| Developer | Tatsumi-system Co., Ltd. | Hurix Systems Pvt. Ltd. |
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
eBook Flip
Not enough reviews yet to summarise bugs or requests.
In-app purchases
SideBooks
- Thema extension Add-On$0.99
eBook Flip
No in-app purchases









