Comparison

BookPDF vs Offline PDF Viewer

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

Head to head
About

BookPDF

Features
Read full description

このアプリは、PDFを“本のように”快適に読むためのシンプルなリーダーです。 右から左へのページめくり表示に対応し、読書の流れを邪魔しない設計にしてあります。 主な機能 ・右から左へ進むページめくり(読書向け表示) ・しおり(現在ページをワンタップで登録/解除) ・しおり一覧からページへジャンプ ・続きから再開(前回の読書位置を保存) ・PDFの取り込みとライブラリ管理(名前変更・削除) こんな人におすすめ ・PDF小説や資料を“読むために”使いたい ・余計な機能より、見やすさと操作の迷いの少なさを重視したい ※本アプリは、ユーザーが用意したPDFファイルを端末内で閲覧するためのアプリです。

About

Offline PDF Viewer

Features
Read full description

Offline PDF Viewer is an app for reading PDF files transferred to your iPad or iPhone. Its main feature is the ability to browse folders transferred through Finder or iTunes File Sharing while preserving their original folder hierarchy. This app may suit you if: - You have a large collection of scanned PDF files - You want to transfer PDFs to your iPad while keeping the same folder structure as on your Mac or PC - Your PDF collection is too large for cloud synchronization, and you prefer to manage it entirely on your device This app focuses on reading PDFs. It does not include editing, annotation, or some other features commonly found in general-purpose PDF viewers. Please review the following list of supported and unsupported features before using the app. ■ Features - Browse folders transferred through Finder or iTunes File Sharing while preserving their folder hierarchy - Adjust page-margin cropping and fine-tune rotation for each PDF - Switch to right-to-left page turning, primarily for Japanese books - View two pages side by side - See your approximate position in the PDF with a subtle ▲ indicator ■ Not Supported - Cloud synchronization of PDF files - Moving or renaming files within the app - Writing to or editing PDF files - Bookmarks, highlights, annotations, or text selection - Page zooming

Screenshots

BookPDF4 screens
Offline PDF Viewer3 screens

Verdict

The call

The clearest difference is in-app purchases: BookPDF at none against Offline PDF Viewer's 1. Offline PDF Viewer's advantage is update cadence (daily vs every 2 days). On price, ads, device support and iOS requirement 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. Offline PDF Viewer sells 1 one-off in-app purchase. BookPDF asks for nothing beyond the download.

UpkeepUpdate frequency

BookPDF ships an update every 2 days, Offline PDF Viewer daily. The most recent releases landed on October 11, 2026 and October 18, 2026 respectively.

Scorecard2 real differences · 4 level
BookPDF versus Offline PDF Viewer: the parameters behind the verdict, then further details
ParameterBookPDFOffline PDF Viewer
PriceFreeFree
Update frequencyEvery 2 daysDaily — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS1817.6 — better
Further details — not scored
Size2 MB10 MB
Age rating4+4+
DeveloperYuta Sugawaratakaaki024

In-app purchases

None

BookPDF

No in-app purchases

1 purchases

Offline PDF Viewer

One-time1
  • Support Developer$2.99

Questions

Is BookPDF free?
BookPDF is free to download, with no in-app purchases.
Is Offline PDF Viewer free?
Offline PDF Viewer is free to download, with in-app purchases available.
Do BookPDF or Offline PDF Viewer have ads?
Neither BookPDF nor Offline PDF Viewer shows ads.
Which is updated more often, BookPDF or Offline PDF Viewer?
BookPDF ships an update every 2 days, and Offline PDF Viewer daily. Most recently, BookPDF was updated on October 11, 2026 and Offline PDF Viewer on October 18, 2026.

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