Comparison

iBunkoHD vs Smooth Reader

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

iBunkoHD

Experience reading novels, documents, and comic books with a realistic interface that mimics a physical book. Organize your library with a bookshelf, add notes to bookmarks, and easily transfer files from various cloud services. Enjoy enhanced readability with smart screen design and quick page navigation.

Highlights
  • Realistic paper book interface
  • Vertical and horizontal writing support
  • Double page spread view
  • Built-in Aozora Bunko library access
  • Customizable bookshelf organization
  • Bookmark with notes and text selection
  • Multiple file format support (.txt, .pdf, .zip, .rar, .cbz, .cbr)
Features
Read full description

iBunkoHD provides you the best way to read novels, documents and comic books on iPad. Thanks to a realistic interface, you can enjoy reading as you would with a real paper book. Reading on your iPad is now easier than ever! This is a great iPad app for all the book lovers! Won Good Design Award 2010 Ranked #1 in the Japanese App Store in 2010 Read books and comics in vertical setting with comfort ・Support both horizontal (left open) and vertical (right open) writings. ・The app automatically detects the binding direction of a PDF document. Double page spread and page effect ・When viewed landscape mode, the pages switch to the double page spread. The pages containing landscape format images are automatically treated as a double page spread. ・You can "flip" pages just like reading a real paper book. Feature about 230 built-in books and "Aozora Bunko" ・ You can download a book with simple controls from "Aozora Bunko", the Japanese digital library that provides copyright-free Japanese literary works. ・ The app comes with the well-known books from "Aozora Bunko". "Bookshelf" function ・Create a bookshelf as you need. ・You can easily choose a book you'd like to read by browsing the book covers displayed on the shelf. "Bookmark" function ・You can place as many bookmarks as you want and add notes on it. ・Select text as a bookmark in order to highlight the sentence. Supported file formats. iBunkoHD supports the following file formats as books: - .txt .pdf - .zip .rar (containing .txt or .jpg/.png files) - .cbz .cbr Transfer files ・Transfer the files using iTunes 'File Sharing' via the USB cable as well as via Dropbox, SkyDrive, pogoplug, Box, SugarSync. The app also supports both the WebDAV and the FTP servers. Utilize data from PDF ・Support the table of contents or hyperlinks on the file. ・Select and search words (when the data contains text). ・Using our own processing technology, app can select a Japanese words smoothly. Smart screen design removing the white space ・Eliminate unnecessary white space for better readability on the screen. Thumbnails of pages show quick reference for where you'd like to read ・List the page thumbnails at the bottom of the screen or in the full screen. ・The page with bookmarks will be attached a mark. You can also display only the page thumbnails which contain bookmarks. History back pages ・Viewed pages are saved in history so you can easily go back to the previous page. Look up words in the dictionary ・You can use the iPad's built-in dictionary as well as other dictionary apps that support custom URL schemes. ・Just select text and tap the button to look up the word. Support Bluetooth keyboards ・You can read without touching the screen by using the compatible device. Passcode lock ・You can set passcode lock on specific bookshelves or the "folder" screen that stored transferred files. Various page settings ・Available various settings such as enable/disable the flipping effect or change the position of the tap control. ・Customize your iBunkoHD to suit your own preferences! You will find many more convenient functions and settings.

About

Smooth Reader

This app offers a fast and smooth PDF reading experience, mimicking the feel of physical books. It features a unique "Home View" for enlarged text reading and a dynamic 3D perspective library for easy book discovery and organization.

Highlights
  • Smooth page turning
  • Home View for enlarged text
  • 3D perspective book library
  • Book categorization with tags
  • Smart tags for new/recent books
  • Bookmark management
  • Table of contents support
Read full description

"Smooth Reader" is a fast PDF reader that enables smooth and fast page turning like real printed books. (1)The most distinguished feature is "Home View" function which enables you to read books with large characters. If you set Home View for the area you want to zoom, you can read the area in full screen. Only with flick or tap operation, you can keep reading pages with large characters. (2)In addition, you can get a "3D perspective view" of book cover thumbnails, and the books move by automatically. Thus you can find desired books easily and enjoy as if you walked along the shelf in a real bookstore. (3)Have trouble organizing your books on the shelves? "Smooth Reader" can help you organize many books efficiently and effectively. With the "Book Categories Tags" functions, you can put tags on your favorite books and break them into categories. Your books with the tags are instantly lined up by category on the shelf. Since you can easily create or delete the tags and put multiple tags on one book, you can organize your books into categories in different ways. The books you newly registered or recently read are automatically attached with "New" tags or "Recently Read" tags respectively and organized on the shelf (Functions called "Smart Tags"). 【Functions】 [Supported file format] - PDF [Reading Direction] - Left to Right, Right to Left, or Up to Down [Two-page Spread] - One page or Two-page spread (supporting both horizontal and vertical direction of iPad) [Page turning] - Flick, Tap, or Touch and hold operation(consecutive page turning) (When two-page spread, one-page or two-page turning is possible in one action) [Reading Function] - Page thumbnails using pinch-in operation. (requires iOS 6 or later) - Support of table of contents (outline) embedded in PDF. - Bookmarks (add, jump, delete, edit) - PDF link jump (page, URL, mail address) [Home View Function] - Function to keep reading pages with large characters. If you set Home View for the area you want to zoom, you can keep reading the area in full screen. With drag or flick operation, you can also read pages outside of the area. Only with flick or tap operation, you can keep reading pages with large characters. [File storage] - Storeroom (where all files are stored) - Library (where only tagged files are lined up) [Book categories tags] - Create, delete, rename, and arrange the order - Smart tags feature ("New", "Recently Read") [File info] - Book cover(thumbnail) format or List format - 3D perspective view in Book cover format. - File name, file size, last modified date, total number of pages, current page number, and author name(from PDF property). - In order of file name, last modified date, last access date, registered date, or author name [File management] - File deletion - File rename [File import] - Transfer using the file-sharing function of iTunes. - Download using built-in web browser function - Download using Safari or Mailer via Open-in feature [Other functions] - Retina display support, Help function [Language] - English, Japanese, Chinese(Simplified), Korean * The books in the screenshots above are sample images, they are not included in this app.

Verdict

The call

The clearest difference is rating: iBunkoHD at 4.0 against Smooth Reader's 1.0. iBunkoHD also leads on in-app purchases (none vs 10) and review sentiment (58% vs 25%). Smooth Reader's advantage is price ($3.99 vs $6.99). On update cadence, ads, monetization model 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

CostPrice · In-app purchases · Ads · Monetization

iBunkoHD costs $6.99 and Smooth Reader $3.99 up front. Smooth Reader sells 10 one-off in-app purchases. iBunkoHD asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

iBunkoHD holds the better App Store score, 4.0 against 1.0. That said, the two scores are not equally well evidenced: iBunkoHD has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 58% of iBunkoHD's written reviews are positive against 25% of Smooth Reader's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 27, 2026 and June 5, 2026 respectively.

Scorecard6 real differences · 4 level
iBunkoHD versus Smooth Reader: the parameters behind the verdict, then further details
ParameteriBunkoHDSmooth Reader
Price$6.99$3.99 — better
Rating4.0 (7 ratings) — better1.0 (1 ratings)
Positive reviews58.5% of reviews — better25.0% of reviews
Number of ratings7 — better1
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidPaid
DevicesiPadiPad
Requires iOS12.0 — better15.5
Further details — not scored
Size35 MB34 MB
Age rating4+17+
DeveloperDWANGO Co., Ltd.Personal Media Corp.

Customer experience

iBunkoHD

All ratings7 ratings
Positive71.4%
Neutral0.0%
Negative28.6%
Written reviews142 reviews
Positive58.5%
Neutral9.2%
Negative32.4%

Smooth Reader

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews4 reviews
Positive25.0%
Neutral0.0%
Negative75.0%

In-app purchases

None

iBunkoHD

No in-app purchases

10 purchases

Smooth Reader

One-time10
  • TRONWARE VOL.178$6.99
  • TRONWARE VOL.173$6.99
  • TRONWARE VOL.176$6.99
Show 7 more
  • TRONWARE VOL.174$6.99
  • TRONWARE VOL.175$6.99
  • TRONWARE VOL.172$6.99
  • TRONWARE VOL.177$6.99
  • TRONWARE VOL.180$6.99
  • TRONWARE VOL.179$6.99
  • TRONWARE VOL.181$6.99

Questions

Is iBunkoHD free?
iBunkoHD costs $6.99, with no in-app purchases.
Is Smooth Reader free?
Smooth Reader costs $3.99, and also offers in-app purchases.
Which has better reviews, iBunkoHD or Smooth Reader?
iBunkoHD is rated higher. iBunkoHD averages 4.0 out of 5 from 7 ratings, while Smooth Reader averages 1.0 from 1 ratings.
Do iBunkoHD or Smooth Reader have ads?
Neither iBunkoHD nor Smooth Reader shows ads.
Which is updated more often, iBunkoHD or Smooth Reader?
iBunkoHD ships an update every 2 months, and Smooth Reader every 2 months. Most recently, iBunkoHD was updated on September 27, 2026 and Smooth Reader on June 5, 2026.

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