PDF Reader vs PDF比較・差分チェック
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PDF Reader
This app provides comprehensive PDF management, including reading, editing, and scanning. It uses AI for intelligent document recognition, summarization, and conversion to various formats. Securely store and access your files in the cloud or from popular services.
- AI-powered PDF editing and summarization
- Intelligent document scanning with OCR
- Convert between PDF and other file formats
- Annotate, sign, and fill PDF forms
- Cloud storage integration (Google Drive, OneDrive)
- Merge, split, lock, and compress PDFs
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Experience effortless PDF reading, intelligent scanning, and AI-powered editing with PDF Reader, a simple and intuitive app. It offers a centralized hub for scanning, reading, annotating, converting, and managing your documents. Instantly digitize paper files, receipts, notes, and business cards with advanced AI scanning, then edit, convert, and organize them all in one place. Add comments, insert signatures, fill out forms, and complete tasks effortlessly. You can also upload files to the app’s secure cloud, access PDFs from Google Drive and OneDrive, and convert between PDFs and other formats like Word, Excel, images, and more—all in one app available on iPhone and iPad. PDF Viewing and Management -Auto-Discovery: Instantly locates all PDF files on your device. -Seamless Reading: Open and view PDFs smoothly with adjustable modes. -Page Navigation: Jump to specific pages instantly. -Search Functionality: Find files or text in seconds. -AI Summary: Summarize key points quickly. -File to PDF: Convert documents, images, and web pages into PDFs. -PDF to File: Export PDFs to Word, Excel, and images. -Cloud Backup & Access: Upload, view, and edit files in Google Drive or OneDrive. -File Management: Rename, delete, organize, and share PDFs effortlessly. Smart Scanning and Recognition -AI Scan: Capture paper documents, receipts, notes, and books instantly with your camera. -Auto Edge Detection: Automatically detects document borders and adjusts angles precisely. -Image Enhancement: Brightens, sharpens, and removes shadows for perfect scans. -Batch Scan: Scan multiple pages continuously and combine them into one PDF. -OCR Recognition: Extract and copy text from scanned pages with one tap. -AI Classification: Organize scanned files intelligently by type or content. -Scan to PDF: Instantly convert scans into high-quality PDFs ready for sharing or editing. Practical Editing Features -Annotate PDFs: Highlight, underline, and strikethrough key content. -Handwritten Signatures: Sign digital documents easily using your finger or stylus. -Quick Snippet Copying: Extract and reuse content instantly. -Fill & Insert Text: Complete PDF forms directly without file conversion. Office Document Viewing -Word Viewer: Supports DOC and DOCX formats for fast reading. -Excel Viewer: Manage and view XLS and XLSX files easily. -PPT Viewer: View PowerPoint slides in portrait or landscape mode. PDF Conversion -File to PDF: Convert Word, Excel, PowerPoint, Markdown, text, and images into PDF with one tap. -PDF to File: Convert PDFs into Word, Excel, text, images, and PowerPoint formats instantly. Advanced PDF Tools -Merge PDFs: Combine multiple files into one. -Split PDFs: Divide large files into smaller, more manageable sections. -Lock PDFs: Add password protection for sensitive documents. -Compress PDFs: Reduce file size without losing quality. AI-Powered Features -AI Summary: Generate concise summaries for faster review. -AI Scan: Intelligent document scanning with auto recognition and correction. Cloud Backup and Management -Upload to Cloud: Save PDFs securely to cloud storage. -File Protection: Keep your files safe and prevent loss. -Google Drive and OneDrive Integration: Open, edit, and sync files seamlessly across platforms. Download our powerful office app and revolutionize your workflow. Whether you need a document scanner, PDF reader, eBook reader, PDF editor, converter, or manager, this free and lightweight app is built to maximize your productivity. Start your PDF management and scanning journey now—download and experience it today. Privacy Policy: https://getpdfreader.github.io/ipdfreader/privacypolicy.html Term of Use: https://getpdfreader.github.io/ipdfreader/termsofservices.html DO NOT hesitate to contact us if you have any questions. Support Email: pdfreader.feedback@outlook.com
PDF比較・差分チェック
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相手方から戻ってきた契約書、どこを直されたのか、端から読み比べていませんか。 Mikurabe は、旧版と新版の PDF を選ぶだけで、追加・削除・変更された箇所を色分けして拾い出します。 比較はすべて端末の中で行い、PDF の本体を外部のサーバーに送ることはありません。 【変わった箇所が、ひと目でわかる】 ・旧版と新版を左右に並べ、追加は緑、削除は赤、変更は橙で示します ・変更点は条項ごとにまとまった一覧で表示。タップすると両方の PDF の該当箇所へ移動します ・PDF のレイアウトの上に赤字を書き込む表示と、文章として取消線と下線で読む表示を切り替えられます ・数値だけの変更や、追加・削除・変更の種類で絞り込めます ・本文と変更点をまとめて検索できます 【表記のゆれは、変更として数えない】 ・全角と半角、空白と改行の量、行末で語を分けたハイフン、英字の大文字と小文字の違いを無視できます ・新旧の両方で繰り返すヘッダとフッタを比較から外せます ・改ページの位置のずれや、条番号の振り直しを、すべての条の変更として拾いません ・条項が丸ごと移動した場合は、削除と追加ではなく「移動」として示します 【確認から返信まで、ひとつのアプリで】 ・変更を1件ずつ了承・差し戻しし、メモを残せます。判断すると次の未確認の変更へ進みます ・差し戻した変更から、条項と変更前後を引用した相手方への返信文を下書きできます。丁寧・簡潔の文体を選べ、編集してそのまま共有できます ・旧・新の PDF に差分を焼き込んだファイルと、変更サマリー(PDF / テキスト)を書き出せます。元の PDF に付いているコメントやハイライトも残ります 【AI の要点(購入者向け)】 ・変更ごとに、どんな話題の変更か(金額・期日など)と、一行の要点を添えます ・要点づくりは端末の中のモデルで行います。変更の検出には AI を使わないので、見つかる変更は AI のオン・オフで変わりません ・Apple Intelligence に対応した端末で使えます 【比較の記録】 ・比べた2つのファイルと設定、変更の件数を記録し、あとから開き直せます ・同じアカウントのほかの端末と、記録と変更点の一覧を同期できます(購入者向け・既定はオフ。PDF の本体とファイルの場所は同期しません) 【こんな方に】 ・相手方から戻った契約書ドラフトを確認する、士業・法務・契約のご担当者 ・仕様書・見積書・就業規則・利用規約の改訂を比べる実務者 ・原稿や翻訳の版ごとの修正を追う編集者・翻訳者 【お試しと購入】 ・お試しとして、5組まで比較できます。ページ数の制限はありません ・フル機能アンロックを購入すると、何組でも比較でき、書き出し・返信文の下書き・AI の要点・同期が使えます ・一度の購入で、ずっと使えます(定期的な課金ではありません) ・スキャンした PDF(文字の情報が無い PDF)を比べるには、文字認識のアドオンが必要です。アドオンはフル機能アンロックの購入後に追加できます 文字の情報を持つ PDF(Word や各種ソフトから書き出した PDF)が対象です。
Screenshots
Verdict
The clearest difference is in-app purchases: PDF比較・差分チェック at none against PDF Reader's 11. PDF比較・差分チェック also leads on ads (none vs shown). PDF Reader's advantage is update cadence (every 8 days vs every 2 months). On price, 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
Both are free to download. PDF Reader sells 9 in-app purchases, starting at $3.99 per 7 days. PDF比較・差分チェック asks for nothing beyond the download.
PDF Reader ships an update every 8 days, PDF比較・差分チェック every 2 months. The most recent releases landed on October 30, 2026 and October 22, 2026 respectively.
| Parameter | PDF Reader | PDF比較・差分チェック |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (753 ratings) — better | — |
| Positive reviews | 37.0% of reviews | — |
| Number of ratings | 753 — better | — |
| Update frequency | Every 8 days — better | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 118 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | DAOWEI NETWORK TECHNOLOGY PTE.LTD. | Toshihiro Nakao |
In-app purchases
PDF Reader
- One Week3 Days trial2 variants$3.997 Days
- One Week$3.997 Days
- One Week3 Days trial$7.997 Days
Show 5 moreShow fewer
- One Week7 Days trial$7.997 Days
- One Month$12.991 Month
- One Year$49.991 Year
- One Year$76.991 Year
- One Year3 Days trial$76.991 Year
- Lifetime$99.99
PDF比較・差分チェック
No in-app purchases









