⚡ 簡単な評価:
- 価格: PDF Expert runs $4.99/week, $1.53/week billed yearly, or $139.99 lifetime. Nitro PDF starts at $15/user/month or $270 one-time.
- 最適な用途: PDF Expert for Mac, iPhone, and iPad owners. Nitro PDF for Windows teams and Office-heavy work.
- 主な違い： PDF Expert runs only on Apple デバイス. Nitro PDF works on Windows, Mac, and iOS.
- 私たちのおすすめ： PDF Expert for most people. It’s faster to learn and cheaper to own.
The PDF editor with fewer features might be the smarter buy.
PDF Expert and Nitro PDF both handle PDF editing, signing, and conversion.
Nitro PDF Pro packs in more 仕事 tools and runs on Windows.
PDF Expert sticks to Apple devices and keeps things simple.
For a lot of people, that simplicity wins.
Here’s how the two compare in 2026.
概要
This PDF Expert vs Nitro PDF comparison covers pricing, features, and ease of use.
私たちは両アプリのドキュメント、料金ページ、ユーザーレビューを確認しました。
私たちのライター陣は、それぞれの動物と実際に触れ合う時間も設けました。
Those notes appear in the “What Our Team Noticed” sections below.
We also show where each tool sits next to Adobe Acrobat.
PDF Expert とは何ですか?
PDF Expert is a PDF editor for Mac, iPhone, and iPad.
It comes from Readdle, a company known for useful Mac apps.
You can create, edit, annotate, organize, sign, and protect PDFs.
The simple home screen makes it easy to find tools fast.
Four main tabs do the heavy lifting: Annotate, Edit, Scan & OCR, and Export.
Apple gave it an 編集者‘ Choice award.
Readdle’s PDF Expert runs on macOS and iOS devices only.
Watch this quick review to see the app in action.
PDFエキスパート
Fast, clean PDF editing built for Apple devices. Edit text, sign contracts, and sync files everywhere. Try it free for 7 days.
PDFエキスパートの料金プラン
PDF Expert offers three plans in 2026.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 週刊 | 週4.99ドル | A short project or one-off task |
| 年間 | 週1.53ドル | Regular users on Mac, iPhone, and iPad |
| 一生 | $139.99 | Mac users who want to pay once |
Pricing verified October 2026.
無料トライアル: Yes. You get a fully working 7-day trial of the Mac version. No credit card is needed.
返金保証: Refunds depend on where you buy. App Store purchases go through Apple’s refund process.
📌 注記： The Lifetime plan is a one time payment. It only covers the Mac version. Readdle offers 50% off the annual plan for eligible students and educators.
⚠️ Price check: Some sites list $79.99/year for all devices or $12.49/month. Others show $49.99/year for the mobile version only. Old promo codes like PDFE30 expired in March 2024. Confirm the price at checkout.
Key Benefits of PDF Expert
Here’s what makes PDF Expert worth a look:
- スピード： PDF Expert launches fast and opens large PDF documents without lag. Reviewers praise how quickly pages render.
- 直感的なインターフェース: The clean, Mac-native layout feels familiar right away. You can rearrange your most-used tools to fit your workflow.
- Full Annotation Tools: Highlight, underline, strike out, and add notes, stamps, and shapes. It’s handy for contracts and study notes.
- Sync Across Apple Devices: One account keeps documents and your signature in sync. Start on a Mac and finish on iPhone and iPad.
- スマートフォーム： It spots form fields and highlights them for you. Filling out a PDF form takes a few taps.
- Reading Mode and Split View: Reading mode fits text to your screen. Split view shows two documents side by side.
私たちのチームが気づいたこと
私たちの 作家 signed up for PDF Expert and used it for daily editing and signing. Here’s what stood out:
PDF Expert Pros & Cons
✅ メリット
- Opens large PDF files fast
- Clean, intuitive interface with four simple tabs
- Syncs files and signatures across Mac, iPhone, and iPad
- Lifetime option for Mac at $139.99
- クレジットカード不要の7日間無料トライアル
❌ デメリット
- No Windows or アンドロイド バージョン
- Lifetime plan covers the Mac only
- Fewer advanced pro tools than Adobe Acrobat
Nitro PDFとは何ですか?
Nitro PDF is a PDF editor and eSignature tool.
Nitro PDF Pro was built as an alternative to Adobe Acrobat.
It runs on Windows and Mac, plus iPhone and iPad.
The layout looks like Microsoft Office, so Word users settle in fast.
Core tools cover editing, Office conversion, forms, OCR, and redaction.
中小企業 and individuals are its main audience.
Here’s a short video tour of Nitro.
ニトロ PDF
A full PDF suite for Windows and Mac teams. Convert Office files, sign, and redact in one place. Free for 14 days.
Nitro PDF の価格設定
Nitro sells two subscription tiers and one one-time license.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 標準 | 1ユーザーあたり月額15ドル | 個人および小規模チーム |
| プラス | カスタム | Larger teams that need admin tools and analytics |
| クラシック | 270ドル（1回限り） | Buyers who want to pay once |
Pricing verified October 2026.
無料トライアル: Yes. Nitro PDF Pro offers a 14-day free trial, and no credit card is required.
返金保証: Nitro doesn’t make its refund terms easy to find. Ask the sales team before you buy.
📌 注記： The price per license is the same for Mac and Windows. The Plus tier needs a custom quote.
⚠️ Price check: Some sites list a $180 one-time license or $11.24 per user per month. Others show about $135 per year. One-time license rights may not last forever, either. Nitro once told owners of licenses older than version 13 to switch to a subscription. Confirm terms at checkout.
Key Benefits of Nitro PDF
Here’s where Nitro PDF earns its keep:
- クロスプラットフォーム: It works on Windows, Mac, and iOS, letting mixed-device teams share one tool.
- Office Conversion: Turn Word, Excel, or PowerPoint files into PDFs and back. It also handles images and other formats.
- Built-In OCR: Optical character recognition makes scanned pages searchable and editable. No extra app needed.
- 電子署名： Apply a legally binding signature without printing. That speeds up sales and HR paperwork.
- 安全 コントロール: You get 256-bit encryption, password restrictions, and permissions. Block printing or editing on sensitive files.
- Usage Analytics: Enterprise users can track productivity and document ROI. It also connects to cloud services.
私たちのチームが気づいたこと
Our writer signed up for Nitro’s free trial and tested conversions and signing. Here’s what stood out:
Nitro PDF Pros & Cons
✅ メリット
- Runs on Windows, Mac, iPhone, and iPad
- Familiar Microsoft Office-style layout
- Strong Word, Excel, and PowerPoint conversion
- 256-bit encryption with print and edit permissions
- 14-day free trial, no card needed
❌ デメリット
- Can be overkill for casual users
- Plus plan needs a custom quote
- The BBB once graded the company F for unanswered complaints
機能比較
Ready to dig in? Below we compare ten key areas, from editing to pricing.
| 特徴 | PDFエキスパート | ニトロ PDF |
|---|---|---|
| 開始価格 | 週4.99ドル | 1ユーザーあたり月額15ドル |
| 無料トライアル | ✅ 7日間 | ✅ 14日間 |
| 1回限りの購入 | ✅ Mac only | ✅ Classic license |
| Windows Support | ❌ | ✅ |
| Edit Existing Text | ✅ | ✅ |
| Annotation Tools | ✅ | ✅ |
| OCR | ✅ | ✅ |
| Office Conversion | ✅ PDF to Office | ✅ Both directions |
| 電子署名 | ✅ | ✅ |
| Redaction & Passwords | ✅ | ✅ |
| 最適な用途 | アップルユーザー | Windows and Office teams |
1. PDF Editing
PDFエキスパート: You can modify existing text, add images, change links, and switch font styles. Reviewers call the feel word processor-like. Making quick fixes takes seconds.
Nitro PDF: Nitro PDF Pro lets you edit text boxes directly in an existing PDF. You can also make changes to documents or build new ones with form tools. The process feels a lot like Word.
💡 プロのヒント: Test fonts and line spacing on your own files during each trial. Complex layouts behave differently across PDF editors.
2. Annotation Tools & Comments
PDFエキスパート: You get highlight, underline, strikeout, notes, stamps, and shapes. You can highlight text in any color and add marginalia. Everything syncs to your other Apple gear.
Markup works the same way on a long contract.
Comments sit right beside the text for easy review.
Nitro PDF: Nitro offers sticky notes, highlights, and drawn shapes. Its collaboration tools let teams annotate and add comments on shared files. It suits teams passing documents back and forth.
3. Working With Images
PDFエキスパート: You can drop images into a PDF and resize them. Drag-and-drop import works for whole files too.
Nitro PDF: Nitro turns images into PDFs and pulls images back out. It works with a wide range of file types.
Going the other way, Nitro can export pages as images.
4. Converting PDFs to Office
PDFエキスパート: PDF Expert can convert PDFs into Microsoft Office formats, plain text, or image files. It all lives under the Export tab. For example, you can turn a signed contract into a Word draft.
Nitro PDF: Conversion is Nitro’s home turf. You can convert PDF files to Word, PowerPoint, and Excel with a few clicks.
PowerPoint exports follow the same steps.
Spreadsheet tables can go to Excel too.
5. Creating PDFs From Office Files
PDFエキスパート: On a Mac, you can save almost any file as a PDF from the print menu. PDF Expert itself focuses on editing, not creating.
Nitro PDF: Nitro converts Word, Excel, and PowerPoint files into PDFs. That makes it handy for people who live in Microsoft Office.
Slide decks convert just as easily.
Excel sheets can become PDFs as well.
6. eSignatures
PDFエキスパート: Capture your signature with the trackpad, keyboard, iPhone camera, or Apple Pencil. It then syncs across all your Apple devices. Signing a lease takes seconds.
Nitro PDF: Nitro’s built-in eSignature tool applies a legally binding signature without printing. It works well when you sign contracts for clients every week.
7. Page Management
PDFエキスパート: Drag pages to reorder them. You can add or extract pages in a few clicks. You can also merge, delete, and rotate pages.
Merging several files works the same way.
Nitro PDF: Nitro merges multiple PDFs into one searchable document. It also covers standard page tasks like reordering and deleting.
8. OCR & Scanning
PDFエキスパート: Scan & OCR has its own tab. One click can scan a page and turn it into editable text. An AI-powered Enhance feature cleans up blurry scans.
Nitro PDF: Nitro’s integrated OCR makes scanned pages fully searchable and editable. It ships in the core app, so you don’t pay extra.
9. セキュリティとプライバシー
PDFエキスパート: Redact text by erasing it or covering it with a black box. Password protection locks access to a file. Compression shrinks files before you email them.
Nitro PDF: Nitro protects documents with 256-bit encryption and password restrictions. Permissions can block printing or editing. Redaction removes sensitive text for good.
⚠️ 警告： Nitro Software once got an F from the Better Business Bureau for unanswered complaints. As of June 2025, the BBB no longer rates it.
10. 価格設定とコスト
| プランの種類 | PDFエキスパート | ニトロ PDF |
|---|---|---|
| 無料トライアル | 7日間 | 14日間 |
| 短期 | Weekly: $4.99/week | — |
| サブスクリプション | Yearly: $1.53/week | Standard: $15/user/month |
| Team / Custom | — | Plus: Custom |
| One-Time | Lifetime: $139.99 | Classic: $270 one-time |
PDFエキスパート: PDF Expert costs less to own. The Lifetime plan is about half Nitro’s Classic price, though it covers the Mac only. It’s also cheaper than Adobe Acrobat.
Nitro PDF: Nitro charges per user, so costs grow with your team. It’s still 30% to 60% cheaper than Adobe Acrobat, depending on the plan. Casual users may pay for tools they never touch.
さまざまなシナリオ
| 必要な場合は | 選ぶ | なぜ |
|---|---|---|
| A Windows PDF editor | ニトロ PDF | PDF Expert has no Windows app |
| Mac, iPhone, and iPad sync | PDFエキスパート | Built for Apple devices |
| Lowest cost to own | PDFエキスパート | Cheaper one-time Mac license |
| Heavy Office conversion | ニトロ PDF | Word, Excel, PowerPoint both ways |
| Team admin and analytics | ニトロ PDF | Usage analytics and permissions |
| 初心者向け | PDFエキスパート | Simpler four-tab layout |
💰 あなたの予算
Solo Apple users save money with PDF Expert’s yearly or lifetime plan. Nitro gets pricier with every user you add.
🔌 あなたの技術スタック
If anyone on your team uses Windows, choose Nitro PDF. All-Apple teams get smoother syncing with PDF Expert.
📝 Your Daily Tasks
Reading, markup, and signing favor PDF Expert for personal use. Constant Office conversion and form building favor Nitro.
🎓 あなたの経験レベル
Beginners pick up PDF Expert’s home screen in minutes. Nitro’s Office-style ribbon feels natural if you know Word.
🆓 無料トライアルとデモ
Both PDF tools let you try before you buy, with no card. Open your real files in each and check what breaks.
🛟 サポートオプション
Ask about support response times before you commit. This matters most if your whole team depends on one product.
切り替えガイド
既にこれらのツールのいずれかをご利用ですか？切り替える場合、どのような変更が予想されますか？
🔄 Switching from PDF Expert to Nitro PDF?
✅ 得られるもの：
- Windows and Mac support on one license price
- Office conversion in both directions
- Usage analytics and print or edit permissions
❌ 失うもの：
- Apple Pencil and iPhone-camera signatures
- Reading mode and split view
- The cheaper lifetime option
📋切り替え方法：
- Save your PDFs from PDF Expert to a cloud folder.
- Start Nitro’s 14-day free trial.
- Open your files in Nitro and recreate your signature.
🔄 Switching from Nitro PDF to PDF Expert?
✅ 得られるもの：
- A faster, simpler interface
- Sync across Mac, iPhone, and iPad
- A lower one-time cost on Mac
❌ 失うもの：
- Windowsのサポート
- Office-to-PDF creation inside the app
- Team analytics and admin tools
📋切り替え方法：
- Move your PDFs from Nitro to iCloud Drive or another cloud folder.
- Start PDF Expert’s 7-day trial on your Mac.
- Drag files into PDF Expert and set up your signature.
私たちのレビューで取り上げられなかったこと
This comparison focused on solo users and small teams. We didn’t test bookmarks, complex form logic, or large batch conversions. We only looked at the English versions, so other languages may differ. Nitro’s Plus plan and enterprise analytics weren’t part of this review.
最終評決
| カテゴリ | 勝者 |
|---|---|
| 💰価格 | PDFエキスパート |
| 👶 使いやすさ | PDFエキスパート |
| ⚡ スピード | PDFエキスパート |
| ✍️ Annotation | PDFエキスパート |
| 🖊️ eSignatures | PDFエキスパート |
| 🔄 Office Conversion | ニトロ PDF |
| 💻 Platform Support | ニトロ PDF |
| 🔒 セキュリティコントロール | ニトロ PDF |
| 🏆総合優勝 | PDFエキスパート |
🏆 WINNER: PDF EXPERT
PDF Expert wins 5 out of 8 categories.
最適な用途: Mac, iPhone, and iPad users, students, and anyone who wants a one-time purchase
PDF Expert and Nitro PDF solve the same problem in different ways. PDF Expert is a fast, focused editor for Apple devices. Nitro PDF is a broader business suite for Windows and Mac.
Nitro is powerful, and it’s the right pick for Windows users and Office-heavy teams. Its biggest advantage is that it runs almost everywhere. Its conversion tools and permissions are strong too.
For everyone else, PDF Expert is the better choice. It’s quicker to learn and cheaper to own. Your files also follow you to your iPhone and iPad.
More of PDF Expert Compared
いくつか例を挙げます PDF Expertの代替品 worth a look:
PDF Expert vs Foxit
PDF Expert wins on: a Mac-native design, Apple Pencil signing, and a simpler layout
Foxit wins on: Windows support, IT deployment tools, and a free PDF reader
PDF Expert vs PDF要素
PDF Expert wins on: faster file opening, a cleaner screen, and tighter iPhone and iPad sync
PDFelement wins on: Windows and Android apps, a built-in AI アシスタント, and form automation
PDF Expert vs UPDF
PDF Expert wins on: a longer history on Mac, an Apple Editors’ Choice badge, and a polished reading mode
UPDF wins on: one license across Windows, Mac, iOS, and Android, built-in AIツール, and frequent lifetime deals
More of Nitro PDF Compared
Here’s how Nitro PDF stacks up against other options:
Nitro PDF vs Foxit
Nitro PDF wins on: an Office-like ribbon, usage analytics, and a one-time Classic license
Foxit wins on: a lighter install, wider IT rollout options, and a free reader app
Nitro PDF vs PDFelement
Nitro PDF wins on: enterprise analytics, detailed permission controls, and smooth Windows team rollout
PDFelement wins on: a lower entry price, an AIアシスタント, and an Android app
Nitro PDF vs DocHub
Nitro PDF wins on: a full desktop app, built-in OCR, and two-way Office conversion
DocHub wins on: browser-based access, Google Workspace links, and a free plan
よくある質問
Quick answers to the questions readers ask most.
PDF Expertは無料で利用できますか？
Not fully. You can open and read PDFs for free, but editing needs a paid plan. A 7-day free trial unlocks everything without a credit card.
PDF Expertは一回限りの料金ですか？
It can be. The Lifetime plan costs $139.99 once but covers the Mac only. The Weekly and Yearly plans are subscriptions.
Nitro PDFは無料ですか？
No. It’s paid software, starting at $15 per user per month. You can try every feature free for 14 days, with no credit card required.
Nitro PDF は Adobe Acrobat よりも優れていますか?
On price, often yes. Nitro is 30% to 60% cheaper and has a friendly Office-style layout. Acrobat still offers more advanced tools for professionals.
Is Nitro PDF safe to download?
Yes, when you download it from the official Nitro website. It uses 256-bit encryption, passwords, and permissions. Avoid cracked copies, which often carry malware.
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