Comparison

book vs Lectio Markdown / PDF Reader

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

Head to head
About

book

This application allows users to view e-book content downloaded from compatible e-book sites. It offers a bookshelf and viewer for a seamless reading experience. Users can manage their account information and registered devices.

Highlights
  • View downloaded e-book content
  • Bookshelf and viewer interface
  • Account management
  • Device registration/deregistration
  • Improved display and usability
Features
Read full description

book-in-the-boxは無料の電子書籍ビューア・アプリです。 book-in-the-boxに対応した電子書籍サイトからダウンロードした電子書籍コンテンツを閲覧することができます。 <お知らせ> V1.2.3 ・SDK 16に対応しました ・書棚/ビューアの表示を改善しました ・アカウント管理サイトで会員情報の変更や退会手続き、端末の登録・解除ができるようになりました ・その他軽微な不具合を修正しました [重要] ■Ver.1.1.8から、新しいiPhoneへの対応にともない、対象OSバージョンをiOS9以上に変更させて頂きます。 今後は、iOS9未満の端末ではアプリのアップデートができなくなります。 なお、iOS9未満の端末でも、以前のアプリ(Ver.1.1.7)はApp Storeからダウンロードが可能です。 すでにインストール済みのアプリも引き続きご利用いただけます。 ■Ver.1.1.7から、使い勝手や品質維持のため、対象OSバージョンをiOS7以上に変更させていただきます。 今後は、iOS7未満の端末ではアプリのアップデートができなくなります。 なお、iOS7未満の端末でも、以前のアプリ(Ver.1.1.6)はApp Storeからダウンロードが可能です。 すでにインストール済みのアプリも引き続きご利用いただけます。 ■Ver.1.1.4から、使い勝手や品質維持のため、対象OSバージョンをiOS6以上に変更させていただきます。 今後は、iOS6未満の端末ではアプリのアップデートができなくなります。 なお、iOS6未満の端末でも、以前のアプリ(Ver.1.1.3)はApp Storeからダウンロードが可能です。 すでにインストール済みのアプリも引き続きご利用いただけます。 <使用方法> ■初回起動時 : 初回起動時に本アプリのユーザ登録を行っていただきます(※1)。後で登録することもできます。ご登録頂く内容は以下の通りです。 ・メールアドレス ・生年月日 ・郵便番号 ・性別(男性/女性) ・パスワード (※1)本アプリのユーザ登録です。電子書籍サイトのユーザ登録ではありません。電子書籍サイトによっては、当該電子書籍サイトのユーザ登録が必要な場合があります。 ■電子書籍コンテンツの閲覧 : book-in-the-box対応電子書籍サイトからダウンロードしたコンテンツをリストから選択すると電子書籍を閲覧することができます。 <ご利用時の注意> ■本アプリは、日本語でのサービス提供となります。また、日本国外ではご利用環境によってはサービスの全部または一部を利用できないことがあります。 ■シャープ株式会社の電子書籍ストア「COCORO BOOKS」をご利用になる場合には、専用のビューア・アプリ「COCORO BOOKS」のご利用をおすすめします。 <お問い合わせ> ■お問い合わせ先メールアドレス: bbx_support@sharp.co.jp ■次の内容のお問い合わせをお受けします。 ・本アプリの使用方法 ・本アプリでの電子書籍コンテンツの閲覧方法 ■受付時間  10:00-17:00  月~金(祝日・年末年始・GW休暇・夏季休暇、および当社指定休日を除く)  ※迅速に回答を差し上げられるよう努めますが、内容・状況によっては回答連絡までにお時間をいただく場合があります。

About

Lectio Markdown / PDF Reader

Features
Read full description

A bookshelf for your PDFs and Markdown files, on iPhone and iPad. Bring in files from the cloud or the Files app, turn their pages in two-page spreads, and write on them with Apple Pencil. Made for you if • You want to read scanned books and comics in spreads, the way you read them on paper • You read papers and documents and want to write notes on them with Apple Pencil • You keep notes, AI chat logs or READMEs in Markdown and want to read them calmly, page by page • Your PDFs are scattered across cloud services and you want them on one shelf Collect: PDFs and Markdown on one shelf From "Add Books", bring in files from any place that appears in the Files app, such as iCloud Drive, Google Drive, OneDrive and Dropbox. You can also open Lectio from the share sheet in another app, or drag and drop files onto the shelf. A Markdown (.md) file becomes an A4 PDF with its headings, lists, tables and code laid out, and takes its place on the shelf. The same file is never added twice, and password-protected PDFs can be added too. Books are kept on your device, so you can read them without a connection. Lectio only reads your cloud files and never changes or deletes them. Read: turn pages like a book Each book remembers its layout (two-page, single page or vertical scroll) and its left or right binding. Right-bound books lay out their spreads from right to left, so comics and vertical text read in their natural direction. Swipe or press the arrow keys to turn the page, and tap the page to hide the buttons. Lectio remembers where you stopped, so the next time you open a book you carry on from there. Switch the page color to night or sepia, adjust the brightness, and keep the screen on while you read. Write: Apple Pencil and four highlight colors Turn on Handwriting in the toolbar and a tool palette appears. Write directly on the page with Apple Pencil or your finger, choose pens, colors and the eraser, and your writing stays with each page. Highlight text in yellow, green, pink or blue, and find your highlights again under Highlights in the sidebar. Press and hold text to copy it, look it up or search the book for it, and tap links on the page. Find: contents, thumbnails and text search Jump to a chapter from the table of contents, or to any page from the thumbnail grid or by its page number. Search the text of a book and each match is highlighted in yellow. Books made from Markdown are searchable too. In the library, find books by name. Organize: favorites, bookmarks and collections Each cover shows how far you have read: New, a percentage, or Finished, and you can sort by Recently Read. See your favorite books, bookmarked pages and highlights in lists. A bookmark keeps the opening words of its page, so you know where you left it. Sort books into collections and arrange them in any order you like. Rename books, or select several to share them, add them to a collection or delete them in one go. Deleted books stay in Recently Deleted for 30 days, where you can bring them back. Widget, Spotlight and Handoff The Home Screen widget shows the books you read recently, and tapping one opens it where you left off. Search for books in Spotlight by name or by words in the text. With Handoff, pass the book and page you are reading to another iPhone or iPad that has the same PDF. iPhone, iPad and iPhone Duo Lectio supports iPhone Duo. Read on the outer display when it is closed, and in spreads on the large inner display when you open it. The buttons sit in the vertical bar along the edge, out of the way of the page. Keyboard, remotes and VoiceOver Press ⌘O to add books, ⌘F to search, ⌘B to bookmark and ⌘W to close. Pages turn with the arrow keys, so a Bluetooth keyboard or a page-turner remote that sends arrow keys works too. VoiceOver and Dark Mode are supported. You can also share and print your books. Start by tapping + in the library and add your first book.

Screenshots

book4 screens
Lectio Markdown / PDF Reader4 screens

Verdict

The call

The clearest difference is update cadence: Lectio Markdown / PDF Reader at every 2 days against book's every 8 months. book's advantage is iOS requirement (9.0 vs 27.0). On price, ads, in-app purchases 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

book ships an update every 8 months, Lectio Markdown / PDF Reader every 2 days. The most recent releases landed on October 10, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 6 level
book versus Lectio Markdown / PDF Reader: the parameters behind the verdict, then further details
ParameterbookLectio Markdown / PDF Reader
PriceFreeFree
Positive reviews0.0% of reviews—
Update frequencyEvery 8 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS9.0 — better27.0
Further details — not scored
Size18 MB20 MB
Age rating17+4+
DeveloperSharp Corporationcaps-rock

In-app purchases

None

book

No in-app purchases

None

Lectio Markdown / PDF Reader

No in-app purchases

Questions

Is book free?
book is free to download, with no in-app purchases.
Is Lectio Markdown / PDF Reader free?
Lectio Markdown / PDF Reader is free to download, with no in-app purchases.
Do book or Lectio Markdown / PDF Reader have ads?
Neither book nor Lectio Markdown / PDF Reader shows ads.
Which is updated more often, book or Lectio Markdown / PDF Reader?
book ships an update every 8 months, and Lectio Markdown / PDF Reader every 2 days. Most recently, book was updated on October 10, 2026 and Lectio Markdown / PDF Reader on October 24, 2026.

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