Comparison

iBunkoS vs 小説Viewer

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

Head to head
About

iBunkoS

This app offers a realistic paper book reading experience on your iPhone, supporting various file formats like TXT, PDF, and comics. It includes features like a digital bookshelf, bookmarking with notes, and dictionary lookups.

Highlights
  • Realistic paper book interface
  • Supports TXT, PDF, CBZ, CBR files
  • 230+ built-in books and Aozora Bunko access
  • Customizable bookshelf and bookmarks
  • File transfer via USB, cloud, and servers
  • Dictionary lookup integration
  • Passcode lock for privacy
Features
Currently charting
Read full description

iBunkoS provides you the best way to read novels, documents and comic books on iPhone. Thanks to a realistic interface, you can enjoy reading as you would with a real paper book. Reading on your iPhone is now easier than ever! This is a great iPhone app for all the book lovers! 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. iBunkoS 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 iPhone'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. 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 iBunkoS to suit your own preferences! You will find many more convenient functions and settings.

About

小説Viewer

Read online novels comfortably on your iPhone or iPod Touch, even without an internet connection. Customize text, track reading progress, and organize your library with folders. Extract and download novels from various websites.

Highlights
  • Offline novel reading
  • Text customization (font, size, orientation)
  • Unread/read tracking
  • Novel extraction from websites
  • Folder organization
  • One-button download
  • Update downloaded novels
Features
Read full description

家でも、電車でも、いつでも、どこでも、小説をよみませんか? 星の数以上にあるオンライン小説、携帯小説を快適に読むためのビュワーです このアプリを使えばネット上で公開されている小説を自分のiPhoneやiPodTouchに保存し、 インターネットがつながらない場所でも快適に小説を読むことができます。 さらに、webサイトで見るのとは違って縦書きで読んだり、自由に文字のフォントやサイズをカスタマイズしたりできます。 また、この小説どこまで読んだかな?と忘れてしまっても、 未読/既読管理ができるので、一発でどこまで読んだかがわかります。 ******************** 要望やバグ報告などコメント欄では少し意思疎通が大変なので、サポート掲示板作りました。詳しい要望やバグについてはこちらで書いていただけると自分も返信出来るのでよりスムーズに改善できると思います。 ぜひご活用ください。(*URL変更しました) http://iphone.9wick.com/novel/thread ******************** ・小説抽出機能 どんなサイトでも小説部分を抽出し、保存することができます。 webの形式に合わせるのではなく、自分の好きな形式で小説を読むことができます。 ・オンラインViewer機能 ちょっときになる小説だなというときに、ダウンロードしなくても、その場ですぐ快適に読むことができます。 もちろん次の話を先読みしてくれるので、ネットワークが遅い場所でもスムーズに読むことができます。 ・フォルダ機能 小説がたくさん溜まっても大丈夫。 自由自在にフォルダを作り、好きなように分類できます。 ・小説ダウンロード機能 検索した小説をワンボタンでダウンロードできます。 一度ダウンロードボタンを押してしまえば ダウンロードが終わるまでほかの小説を読んだり、 検索したりすることが可能です。 ・小説アップデート機能 小説サイトの方で小説に話が追加されたり、変更されたときは アップデートボタンを押すことによりダウンロード済みの小説を最新の状態に保つことができます ・フォント/文字サイズ/文章の向き設定機能 フォントや文字サイズを調節し、より快適に小説を読むための機能がついています さらに、バージョンアップにて要望の多かった「縦書き」に対応しました ・未読/既読管理機能 ちょっとした空き時間に小説を読んでいると混乱しがちな ”どこまで読んだか”をアプリが記録し、まだ読んでいない話を薄い青色の表示でお知らせします。 さらに、アップデートにより追加された話もこの機能を使えば一発でわかっちゃいます ・ページ機能 小説を読むときはスワイプをするか、 ページの上下をタップすることでページが切り替わります。 また、中央部分をタップするとメニューが出て、話一覧に戻ったり、 任意のページまでスライドバーで移動させることができます 途中で中断するときは右上の「しおり」ボタンでしおりを挟めば、 次回開いたときに同じページをすんなりと開くことが出来ます ※このアプリは快適に小説を読むことを目的としたアプリであり、 コンテンツの中身に関しては一切関係ありません。 それぞれのサイトの利用規約をよく読んで、理解した上で使用してください。

Screenshots

iBunkoS4 screens
小説Viewer4 screens

Verdict

The call

The clearest difference is price: 小説Viewer at Free against iBunkoS's $2.99. 小説Viewer also leads on rating (5.0 vs 4.4) and update cadence (every 10 days vs every 2 months). iBunkoS's advantage is in-app purchases (none vs 1) and chart position (#48 vs unranked). On review sentiment, 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

CostPrice · In-app purchases · Ads · Monetization

小説Viewer is free to download; iBunkoS costs $2.99 up front. 小説Viewer sells 1 one-off in-app purchase. iBunkoS asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

小説Viewer holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 9 and 2 respectively. Written reviews point the same way: 51% of iBunkoS's written reviews are positive against 56% of 小説Viewer's.

UpkeepUpdate frequency

iBunkoS ships an update every 2 months, 小説Viewer every 10 days. The most recent releases landed on October 10, 2026 and October 12, 2026 respectively.

Scorecard8 real differences · 3 level
iBunkoS versus 小説Viewer: the parameters behind the verdict, then further details
ParameteriBunkoS小説Viewer
Price$2.99Free — better
Rating4.4 (9 ratings)5.0 (2 ratings) — better
Positive reviews51.2% of reviews56.4% of reviews — better
Number of ratings9 — better2
Update frequencyEvery 2 monthsEvery 10 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree — better
Best chart rank#48 — better—
DevicesiPhone, iPodiPhone, iPod
Requires iOS12.010.2 — better
Further details — not scored
Size34 MB17 MB
Age rating4+17+
DeveloperDWANGO Co., Ltd.kohei kido

Customer experience

iBunkoS

All ratings9 ratings
Positive88.9%
Neutral0.0%
Negative11.1%
Written reviews86 reviews
Positive51.2%
Neutral15.1%
Negative33.7%

小説Viewer

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews55 reviews
Positive56.4%
Neutral12.7%
Negative30.9%

In-app purchases

None

iBunkoS

No in-app purchases

1 purchases

小説Viewer

One-time1
  • 広告削除$1.99

Questions

Is iBunkoS free?
iBunkoS costs $2.99, with no in-app purchases.
Is 小説Viewer free?
小説Viewer is free to download, with in-app purchases available.
Which has better reviews, iBunkoS or 小説Viewer?
小説Viewer is rated higher. iBunkoS averages 4.4 out of 5 from 9 ratings, while 小説Viewer averages 5.0 from 2 ratings.
Do iBunkoS or 小説Viewer have ads?
Neither iBunkoS nor 小説Viewer shows ads.
Which is updated more often, iBunkoS or 小説Viewer?
iBunkoS ships an update every 2 months, and 小説Viewer every 10 days. Most recently, iBunkoS was updated on October 10, 2026 and 小説Viewer on October 12, 2026.

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