

⚡ Quick Verdict:
- 価格: DupDub starts at $11/mo vs NaturalReader at $49/mo
- 最適な用途: DupDub for video creation and AI avatars, NaturalReader for text to speech and reading accessibility
- 主な違い: DupDub is a video-first platform with avatars and dubbing. NaturalReader focuses on converting text and documents into spoken audio.
- Our pick: NaturalReader for most users — it covers more everyday reading and listening needs with better voice quality

DupDub and NaturalReader both turn text into speech.
しかし、それらは全く異なるタイプのユーザーを対象としている。
DupDub is built for video creators who need avatars and dubbing.
NaturalReader is made for readers who want documents read aloud.
This comparison breaks down which tool fits your workflow.
概要
This DupDub vs NaturalReader comparison covers pricing, core features, and ease of use.
We also break down who each ai tool works best for.
Our sources include published specs, documentation, and user reviews.
By the end, you’ll know which text to speech tool fits your needs.
NaturalReaderとは何ですか?
NaturalReader is a text to speech technology platform for reading and listening.
It converts PDFs, documents, websites, and even physical text into natural sounding audio.
The platform offers over 1000 ai voices in more than 100 languages.
Students, professionals, and users with learning disabilities rely on it daily.

ナチュラルリーダー
Turn any text, PDF, or webpage into spoken audio. Over 1000 voices in 100+ languages with a free plan to start.
NaturalReaderの価格設定
NaturalReaderの2026年の価格は以下のとおりです。
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 無料 | 月額0ドル | Casual reading with basic voices |
| シングルプラン | 月額49ドル | プレミアム音声が必要な個人ユーザー |
| チームプラン | 月額79ドル | Teams and commercial use projects |
Pricing verified May 2026.

無料トライアル: Yes — the free version includes unlimited use of free voices, 20 minutes per day of premium voices, and 5 minutes per day of plus voices.
返金保証: 年間契約者は30日以内、月額契約者は14日以内に返金を請求できます。
📌 注記: The free version requires internet access. Audio files generated with the personal use versions are for personal listening only. For commercial use, you need NaturalReader Commercial, which is a separate application with a commercial license.
⚠️ 警告: All subscriptions auto-renew at the end of the billing period. You can turn this off anytime, but cancelling does not automatically start a refund — you must request it separately.
NaturalReaderの主な利点
Here’s what makes NaturalReader worth considering:
- 膨大な音声ライブラリ: Access over 1000 ai voices across 100+ languages and accents. You can pick different voices to match your content.
- 幅広いファイルサポート: Upload PDFs, DOCX, TXT, EPUB, and 20+ other file types. Most audio files and documents work right away.
- AIテキストフィルタリング: The platform removes unwanted text like URLs, footnotes, and citations before reading. This keeps the audio clean and distraction-free.
- クロスプラットフォームアクセス: Use it on the web, through a chrome extension, or via mobile apps on iOS and アンドロイド. Your listening syncs across all デバイス. It also works alongside messaging systems and other systems in your daily workflow.
- アクセシビリティの焦点: Designed for users with dyslexia, ADHD, and other reading-based learning disabilities. Features like adjustable reading speed and text highlighting help with reading tasks.
- MP3ダウンロード: Convert any text into MP3 audio files for offline listening. Great for commutes and 旅行.

What Our Team Noticed
私たちの 作家 signed up for NaturalReader and spent several days exploring the platform. Here’s what stood out:

NaturalReaderの長所と短所
✅ メリット
- Over 1000 voices across 100+ languages and dialects
- Reads 20+ file types including PDF, DOCX, and EPUB
- AI text filtering removes URLs and footnotes automatically
- Works on web, mobile, and via Chrome extension
- Strong accessibility features for dyslexia and ADHD
❌ デメリット
- Paid plans start at $49/month which is steep for casual users
- Free version requires internet — no offline use
- 個人用の音声ファイルは商用利用できません
- No video editing or avatar features included
DupDubとは何ですか?
DupDub is an ai powered platform for creating videos and voiceovers.
It specializes in ai avatar creation, voice cloning, and video translation.
The platform offers over 500 natural sounding ai voices in 70+ languages and accents.
Content creators, marketers, and educators use DupDub for producing high quality videos.
DupDub makes it easy to create compelling content with human like voiceovers and a professional touch.

ダップダブ
Create ai avatars, realistic voiceovers, and translated video content. An all in one platform for text, audio, and video production.
DupDubの価格設定
2026年におけるDupDubのコストは以下のとおりです。
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 無料 | 月額0ドル | 限られたクレジットでプラットフォームをテストする |
| 個人的 | 月額11ドル | 個人クリエイターや趣味で創作活動をしている人 |
| プロ | 月額30ドル | フリーランサーと 中小企業 |
| 究極の | 月額110ドル | Agencies and high-volume video production |
Pricing verified May 2026.

無料トライアル: DupDub offers a 3-day free trial with approximately 10 credits. No credit card required to start.
返金保証: DupDub has a 3-day refund policy. You can cancel within 3 days of purchase for a refund.
📌 注記: Paid plans include commercial licenses for professional content use in ads, corporate training, and educational materials. The official DupDub website lists enterprise pricing with custom quotes for high-volume needs and API access.
⚠️ 警告: The 3-day refund window is very short compared to other tools. Make sure to test DupDub’s core features quickly during the free trial before committing.
DupDubの主なメリット
Here’s what makes DupDub worth considering:
- AIアバター作成: Create ai avatars that can speak and express multiple emotions. You can customize hairstyles, outfits, and accessories for your talking avatars.
- 音声クローニング: Clone any voice from a short audio sample. The cloned voice works across different languages for brand consistency.
- 動画翻訳: Translate and dub video content into over 130 multiple languages. The tool maintains lip movement synchronization with the translated audio.
- AIライティング アシスタント: Generate scripts, marketing copy, and blog posts with built-in ai writing tools. Saves time on content creation.
- 予算に優しいエントリー: Personal plans start at just $11/month. This is a fraction of what recording studios and voice artists charge.
- 話す写真: Turn static images into talking photos that speak your text. Great for creating engaging content on ソーシャルメディア.
- オールインワンツールキット: Combines text to speech feature, video editing tools, subtitle translation, and ai voiceovers in one place. Check any dupdub review to see how it helps enhance productivity for busy creators.
- Transcription and Writing: DupDub Lab offers transcription capabilities for audio and video files. The ai writing assistant helps generate high quality content like scripts and blog posts to save time.

What Our Team Noticed
Our writer signed up for DupDub and spent several days exploring the platform. Here’s what stood out:

DupDubの長所と短所
✅ メリット
- AI avatars with customizable appearance and emotions
- 短い音声サンプルからの音声クローン
- Video translation into 130+ languages with リップシンク
- 月額11ドルからのお手頃価格
- Built-in video editing and subtitle tools
❌ デメリット
- Only 3-day refund window is very tight
- Free trial limited to just 10 credits over 3 days
- Cannot read PDFs or documents like a dedicated reader
- No Chrome extension or dedicated mobile reading app
機能比較
Ready to dive into a detailed comparison of DupDub vs NaturalReader? We’ll explore 9 key features to help you pick the right platform.
| 特徴 | ナチュラルリーダー | ダップダブ |
|---|---|---|
| 開始価格 | 月額49ドル | 月額11ドル |
| 無料プラン | ✅ | ✅ |
| AI音声 | 1000+ | 500+ |
| AIアバター | ❌ | ✅ |
| 音声クローン | ✅ | ✅ |
| ビデオ編集 | ❌ | ✅ |
| Document Reading | ✅(20種類以上のフォーマットに対応) | ❌ |
| Chrome拡張機能 | ✅ | ❌ |
| ビデオ翻訳 | ❌ | ✅ |
| 最適な用途 | 読書とリスニング | 動画制作 |
1. AI音声生成
ナチュラルリーダー: Offers over 1000 natural sounding ai voices in more than 100 languages and accents. The platform uses advanced AI technology for realistic speech output. You can customize reading speed and pick from different voices to match your content type.

ダップダブ: Provides over 700 realistic voiceovers in more than 90 languages and accents. DupDub’s ai voiceovers are designed for video content and marketing pitches. The natural voices support multiple emotions for more engaging content.

2. テキスト読み上げ
ナチュラルリーダー: This is the core feature. It converts any text, PDF, image, webpage, and even physical text into natural sounding audio. The ai text to speech reads Google Docs, emails, and news articles. You can increase reading speed up to 900 words per minute.
ダップダブ: The text to speech feature transforms any text into voiceovers. It’s designed more for voiceover projects than for reading documents. DupDub makes it easy to convert scripts into realistic voiceovers for finished videos.

3. AI Avatar and Video Creation
ナチュラルリーダー: Does not include any avatar feature or video creation tools. NaturalReader is focused entirely on reading and listening. If you need to create content with talking avatars, you’ll need a separate tool.
ダップダブ: DupDub’s ai avatar feature lets you create ai avatars with customizable hairstyles, outfits, and accessories. You can also create talking photos from static images. This is a valuable tool for creating videos and sharing stories on platforms like YouTube.

4. 音声クローン
ナチュラルリーダー: Includes voice cloning on paid plans. You can create a custom voice for consistent branding. The feature supports personal use for individual listening and playback.

ダップダブ: Voice cloning lets you create a digital clone from a short audio sample. The cloned voice supports cross-lingual cloning for brand consistency. This is useful for marketers who need the same voice across different languages.

5. ビデオ編集ツール
ナチュラルリーダー: No video editing tools at all. The platform is built for reading and audio output only. You cannot add background music, sound effects, or subtitles within NaturalReader.
ダップダブ: Includes built-in video editing tools for adding subtitles, background music, and sound effects. You can also add subtitle translation to your finished videos. DupDub makes it possible to handle screen recordings and promotional content in one place.

6. Document and File Support
ナチュラルリーダー: Supports over 20 file types including PDF, TXT, DOCX, EPUB, and images. You can upload documents directly or paste text from websites. The OCR camera scanner reads physical text from books and printed pages.
ダップダブ: Accepts text input and audio files for processing. However, it cannot read PDFs, DOCX files, or other document formats directly. You need to copy and paste text manually into the platform.
⚠️ 警告: If you regularly work with PDFs or academic documents, NaturalReader is the clear choice. DupDub is not designed to be a document reader.
7. Video Translation and Dubbing
ナチュラルリーダー: Does not offer video translation or dubbing features. The platform focuses on text-to-audio conversion. If you need to translate an english video into other languages, NaturalReader cannot help.
ダップダブ: Specializes in video translation and dubbing into over 130 languages. The tool maintains audio quality and lip movement synchronization with the new language. 仕事 teams can localize marketing campaigns quickly.

8. Platform Access and Extensions
ナチュラルリーダー: Available as an online reader, a chrome extension for reading websites, and mobile apps for iOS and Android. Users can continue listening across devices with a single account. The chrome extension lets you listen to text directly from webpages.
ダップダブ: Primarily a web-based platform accessed through a browser. The intuitive interface works well on desktop. There is no dedicated chrome extension or mobile app for on-the-go access. You can visit the official DupDub website to access all features.
9. 価格設定とコスト
料金プランを並べて比較してみましょう。
| プランの種類 | ナチュラルリーダー | ダップダブ |
|---|---|---|
| 無料 | $0/month (limited premium access) | $0/month (3-day trial, ~10 credits) |
| 入場料支払い済み | 月額49ドル(シングルプラン) | 月額11ドル(個人向け) |
| 中級クラス | 月額79ドル(チームプラン) | 月額30ドル(プロフェッショナルプラン) |
| トップティア | — | 月額110ドル(アルティメットプラン) |
ナチュラルリーダー: The free version is generous with unlimited free voices. But paid plans jump to $49/month for the Single Plan. This is a big gap. The pricing makes sense for professionals and users who rely on premium ai text to speech daily.
ダップダブ: Much more affordable. The Personal plan at $11/month is accessible for hobbyists. The Professional plan at $30/month includes commercial use features. DupDub costs less than hiring voice artists or renting recording studios.
さまざまなシナリオ
| 必要な場合は | 選ぶ | なぜ |
|---|---|---|
| 予算が限られている | ダップダブ | $11/month vs $49/month |
| Reading PDFs aloud | ナチュラルリーダー | 20+ file types supported |
| Creating videos with avatars | ダップダブ | Full avatar feature built in |
| ディスレクシアの方へのアクセシビリティ | ナチュラルリーダー | Designed for learning disabilities |
| Translating video content | ダップダブ | 130以上の言語の吹き替え |
| Browsing and reading webpages | ナチュラルリーダー | Chrome拡張機能が含まれています |
💰 あなたの予算
DupDub is the cheaper option at $11/month for paid access. NaturalReader’s free version is generous, but its paid plans start at $49/month — more than 4x the cost of DupDub’s entry plan.
🔌 あなたの技術スタック
NaturalReader fits into a reading-heavy workflow with its chrome extension and mobile apps. DupDub fits into a content creation workflow where you need video editing, voiceover projects, and avatar creation in one platform.
📝 コンテンツの種類
If you work with documents, articles, and ebooks, NaturalReader is the right tool. If you create YouTube videos, marketing pitches, or promotional content with talking avatars, DupDub is built for that.
🎓 あなたの経験レベル
Both tools have a user friendly interface. NaturalReader is simpler — upload a file and press play. DupDub has more features to learn, but its intuitive interface keeps the learning curve manageable.
🆓 無料トライアルとデモ
NaturalReader offers an extensive free version you can use indefinitely. DupDub gives you a 3-day free trial with about 10 credits. Try both before you commit to a paid plan.
🛟 サポートオプション
NaturalReader has been around for over 15 years and serves over 1 million monthly users. DupDub is newer but offers support through its website and email. Both have online help resources and documentation.
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?
🔄 NaturalReaderからDupDubに切り替えますか?
✅ 得られるもの:
- AIアバターの作成と動画コンテンツ用のしゃべる写真
- 130以上の言語での動画翻訳と吹き替え
- Built-in video editing with background music and sound effects
❌ 失うもの:
- PDF and document reading with 20+ file format support
- ウェブページを読み上げるChrome拡張機能
- Mobile apps for iOS and Android listening on the go
📋切り替え方法:
- Download any saved MP3 audio files from NaturalReader
- Create a DupDub account and start your free trial
- Upload your text scripts and begin creating video content
🔄 DupDubからNaturalReaderに切り替えますか?
✅ 得られるもの:
- Read any PDF, DOCX, EPUB, or image file aloud instantly
- Chrome extension for reading websites and Google Docs
- AI text filtering that removes unwanted text and distractions
❌ 失うもの:
- AIアバター作成機能と音声付き写真機能
- Video editing tools with subtitle and music support
- Video translation and dubbing capabilities
📋切り替え方法:
- Export any finished videos or audio files from DupDub
- Create a NaturalReader account and explore the free version
- Upload your documents and set your preferred voice and speed
What Our Review Didn’t Cover
This comparison focused on individual creators and small teams. We didn’t test enterprise-level API access or high-volume usage on either platform. NaturalReader EDU licenses for schools and universities were not evaluated. DupDub’s enterprise custom pricing was not explored in detail. Our observations are based on the May 2026 versions of both tools — features may have changed since then.
最終評決
| カテゴリ | 勝者 |
|---|---|
| 💰価格 | ダップダブ |
| 🎙️ AI音声品質 | ナチュラルリーダー |
| 🎬 動画制作 | ダップダブ |
| 📄 Document Support | ナチュラルリーダー |
| 👶 使いやすさ | ナチュラルリーダー |
| 🔌 プラットフォームへのアクセス | ナチュラルリーダー |
| 🌐 Translation | ダップダブ |
| 🏆総合優勝 | ナチュラルリーダー |
🏆 受賞者:NaturalReader
NaturalReaderは7部門中4部門で受賞した。
最適な用途: Reading documents aloud, accessibility for learning disabilities, daily listening across devices
NaturalReader and DupDub serve very different purposes. NaturalReader is a dedicated text to speech tool that reads your documents, webpages, and books aloud. DupDub is a video-first platform for creating content with ai avatars and voiceovers.
DupDub is the better choice if you need video translation, talking avatars, or an affordable all in one platform for video content. It saves time compared to hiring voice artists or booking recording studios.
However, if you need a tool for daily reading, document access, and listening across devices, NaturalReader is the stronger pick. Its extensive range of voices, file support, and accessibility features cover more everyday needs.
NaturalReaderの比較をもっと見る
NaturalReaderが他の競合製品と比べてどうなのか、以下に示します。
NaturalReaderとSpeechifyの比較
NaturalReaderが優れている点: Lower pricing, more file format support, AI text filtering
Speechifyが勝利した点: Polished mobile app experience, celebrity voice options, faster playback speeds
NaturalReader vs イレブンラボ
NaturalReaderが優れている点: Document reading support, free plan generosity, cross-platform access
ElevenLabsが勝利した点: Voice realism and quality, advanced voice cloning, developer API flexibility
NaturalReader vs マーフ 人工知能
NaturalReaderが優れている点: File format variety, accessibility features, free version depth
Murf AIが勝利した点: Studio-quality voiceovers for ads, team collaboration tools, video syncing features
DupDubの比較をもっと見る
DupDubが他の競合他社と比べてどうなのか、以下に示します。
DupDub vs ElevenLabs
DupDubが勝利した項目: AI avatar creation, video editing tools, lower entry price
ElevenLabsが勝利した点: Voice realism and expressiveness, larger developer community, more voice customization controls
DupDub vs 説明
DupDubが勝利した項目: AI avatars and talking photos, video translation into 130+ languages, lower starting price
説明文が勝つ点: 満杯 ポッドキャスト editing suite, transcript-based video editing, better screen recordings workflow
DupDub vs Murf AI
DupDubが勝利した項目: Video dubbing and translation, AI avatar creation, broader content creation toolkit
Murf AIが勝利した点: Voice quality for professional ads, team workspace features, commercial voice licensing
よくある質問
NaturalReaderは無料で利用できますか?
Yes. The free version includes unlimited use of free voices, 20 minutes per day of premium voices, and 5 minutes per day of plus voices. The free plan requires internet access and covers personal use only.
DupDub の料金はいくらですか?
DupDub offers a free plan, a Personal plan at $11/month, a Professional plan at $30/month, and an Ultimate plan at $110/month. Paid plans include a commercial license for professional content creation.
NaturalReaderはSpeechifyより優れていますか?
It depends on your needs. NaturalReader supports more file types and offers a more generous free version. Speechify has a stronger mobile app and faster playback options. Both are solid choices for text to speech.
DupDub AIは何をするものですか?
DupDub is an ai powered platform for creating videos, voiceovers, and talking avatars. It also handles video translation, voice cloning, and ai writing for scripts and marketing copy.
最も自然な音声合成はどれですか?
NaturalReader uses advanced AI for realistic speech with over 1000 voices. DupDub’s voices are designed for video content and support multiple emotions. Both produce natural sounding voiceovers, but voice quality depends on the specific voice you choose.













