⚡ Quick Verdict:
- 価格: NaturalReader has a free plan ($0/month). Revoicer starts at $37/month with no free option.
- 最適な用途: NaturalReader for reading documents and accessibility. Revoicer for creating voiceovers with voice emotions.
- 主な違い： NaturalReader reads files like PDFs and webpages aloud. Revoicer generates speech voices for videos and audio content.
- Our pick: NaturalReader for most users — its free version, Chrome extension, and file support make it easier to start.
Not all text to speech apps solve the same problem.
NaturalReader reads your documents, emails, and PDFs out loud.
Revoicer creates voiceovers with real human emotions for videos.
Same category, very different tools.
This Revoicer vs NaturalReader comparison shows you which one fits your needs.
概要
This Revoicer vs NaturalReader comparison covers pricing, ai voices, file support, and ease of use.
We also break down who each text to speech tool works best for.
Our sources include published specs, official documentation, and user reviews.
By the end, you’ll know which ai voice generator fits your workflow.
NaturalReaderとは何ですか?
NaturalReader is an ai text to speech tool that turns written text into natural sounding audio.
It reads PDFs, Word documents, images, webpages, and even physical text out loud.
The platform offers over 1000 AI voices in more than 100 languages.
NaturalReader offers both personal use versions and a NaturalReader Commercial option for commercial use.
ナチュラルリーダー
Reads PDFs, docs, and webpages aloud with 1000+ ai voices. Free plan included. Works on mobile, desktop, and Chrome.
NaturalReaderの価格設定
NaturalReader offers a free version and two paid plans. Here’s what each costs.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 無料 | 月額0ドル | Casual listeners and students |
| シングルプラン | 月額49ドル | 個々のパワーユーザー |
| チームプラン | 月額79ドル | チームと共同プロジェクト |
Pricing verified May 2026.
無料トライアル: Yes — the free version lets you use free voices with unlimited access and premium voices for 20 minutes per day.
返金保証: Yearly subscribers can request a refund up to 30 days after purchase. Monthly subscribers get 14 days.
📌 注記： Audio files generated using NaturalReader Online are for personal use only. If you need voiceovers for commercial use, you must purchase NaturalReader Commercial separately.
⚠️ 警告： All subscriptions auto-renew at the end of each billing period. You can turn this off anytime, but cancelling does not trigger an automatic refund.
NaturalReaderの主な利点
Here’s what makes NaturalReader worth considering:
- 膨大な音声ライブラリ: Over 1000 AI voices across 100+ languages and dialects. You can pick the perfect voice and adjust reading speed to match your preference.
- ファイル形式のサポート: Reads 20+ file types including PDF, DOCX, EPUB, and images. You can also scan physical text with the OCR camera scanner on mobile.
- クロスプラットフォームアクセス: Available as a web app, mobile app (iOS and アンドロイド), and Chrome extension. Use it on websites, desktop, or mobile — one account syncs your listening across devices.
- AIテキストフィルタリング： Automatically removes unwanted text like URLs, footnotes, and citations. This keeps the reading experience clean and focused.
- アクセシビリティの焦点: Designed for users with dyslexia, ADHD, and other reading difficulties. Features like dyslexia-friendly fonts and text highlighting help students complete reading tasks.
- MP3ダウンロード： Convert any text into audio files in MP3 format. You can download them for offline listening anytime.
- Reading Speed Control: Increase reading speed up to 900 words per minute. Adjust it to fit your pace and workflow.
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
- Free plan with unlimited free voice access
- Reads 20+ file types including PDF, DOCX, and EPUB
- Chrome extension reads webpages and Google Docs directly
- AI text filtering removes distracting URLs and footnotes
- Over 15 years of experience in text to speech technology
❌ デメリット
- 無料プランでは、プレミアム音声通話は1日20分までに制限されています。
- Personal use only — commercial license sold separately
- Free version requires internet connectivity to work
Reviocer とは何ですか?
Revoicer is an ai voice generator that turns text into human sounding voiceovers.
It lets you create voiceovers with voice emotions like a serious tone or a more joyful tone.
The Revoicer app supports 40+ languages with multiple accents including UK accent, Australian accent, and Ireland accent.
Content creators, marketers, and educators use it to produce audio content for YouTube videos, explainer videos, and sales videos.
The Revoicer voice synthesizer AI offers the most amazing collection of speech voices with multiple accents and voice emotions.
リボイス
Creates speech voice overs with real human emotions in just a few clicks. Supports male, female, and kid voices across 40+ languages. Read our full revoicer review or explore revoicer alternatives for more options.
Revoicerの価格
Revoicer pricing starts higher than NaturalReader. There is no free plan or free trial available.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| リボイス標準 | 月額37ドル | フリーランサー そしてソロクリエイター |
| Revoicer Pro | 月額47ドル | Professionals needing more features |
| リボイスエージェンシー | 月額127ドル | 代理店および企業 |
Pricing verified May 2026.
無料トライアル: No — Revoicer does not offer a free plan or free trial before purchasing.
返金保証: Yes — Revoicer provides a no-questions-asked 60-day refund guarantee on all plans.
📌 注記： Higher-tier plans include extra features like voice cloning, background music, and SRT subtitle generation. The Revoicer Agency plan also includes a text-to-voice API for app integration.
⚠️ 警告： Without a free trial, you must commit to a paid plan to test the Revoicer voice synthesizer. The 60-day refund policy is your safety net if the voices don’t meet your needs.
Revoicerの主な利点
Here’s what makes Revoicer worth considering:
- 声の感情表現： Add a serious tone, a more joyful tone, or other real human emotions to your speech voices. This makes ai generated voices sound more human-like than flat text to speech voices.
- 複数のアクセント: Revoicer features multiple English accents including UK accent, Australian accent, and Ireland accent. You can pick the right tone for your target audience.
- Male, Female, and Kid Voices: Choose from male female and kid voices. This variety helps match the voice to your content type.
- 速度と一時停止の操作方法： Adjust speech speed and add pauses to emphasize specific words or even whole phrases. You can create voiceovers in only a few clicks with the right pacing for your content.
- 迅速な対応: Revoicer can produce a voiceover in about one minute. You can create voiceovers in just a few minutes for varying lengths of text.
- バックグラウンドミュージック: Higher-tier plans let you add background music directly to your voiceovers. This saves time compared to editing in a separate tool.
What Our Team Noticed
Our writer signed up for Revoicer and spent several days testing the voice generator. Here’s what stood out:
Revoicerの長所と短所
✅ メリット
- Voice emotions add realism to ai voice overs
- An amazing collection of other features like background music and SRT subtitles
- Multiple English accents for targeting different audiences
- 60日間無条件返金保証
- Generates voiceovers in about one minute
❌ デメリット
- 無料プランや無料トライアルは利用できません。
- 言語によっては、AI音声がロボットのように聞こえる場合がある。
- Higher pricing than similar voice 発電機
機能比較
Ready to dive into a detailed comparison of Revoicer vs NaturalReader?
We’ll explore 8 key features to help you pick the right text to speech app.
| 特徴 | ナチュラルリーダー | リボイス |
|---|---|---|
| 開始価格 | 月額0ドル（無料） | 月額37ドル |
| 無料プラン | ✅ | ❌ |
| AI音声 | 1000+ | 80+ |
| 言語 | 100+ | 40+ |
| 声の感情 | ✅ (Emotive AI) | ✅ |
| File Reading (PDF, DOCX) | ✅ (20+ types) | ❌ |
| Chrome拡張機能 | ✅ | ❌ |
| モバイルアプリ | ✅（iOS & Android） | ❌ (Web-based only) |
| 音声クローン | ✅ | ✅ (Higher plans) |
| 最適な用途 | 読書とアクセシビリティ | ボイスオーバー制作 |
1. AI音声品質
ナチュラルリーダー: Uses the newest and highest technology of AI voices on its Plus tier. The voices sound natural across most languages. NaturalReader has been refining its text to speech technology for over 15 years, and it shows in the voice quality.
リボイスャー: Offers 80+ ai voices designed to convey sophistication and emotion. Revoicer brings real human emotions to its speech voices online. However, the AI voice quality varies depending on the language selected and text complexity.
2. 声の感情表現
ナチュラルリーダー: Includes emotive AI voices on paid plans. You can choose voice styles that match your content. The emotion options work well for casual listening and reading aloud.
リボイスャー: This is where Revoicer shines. You can add a serious tone, a more joyful tone, or build tension in your voiceovers. The voice emotions feature helps create pre recorded voiceovers that sound like a human voice rather than robotic voices.
3. Language Support and Accents
ナチュラルリーダー: Supports over 100 languages and dialects. The voice library is larger, giving you more choices per language. This language support makes it useful for multilingual teams and global users.
リボイスャー: Revoicer supports 40+ languages with multiple accents. You get speech voices with UK accent, Australian accent, Ireland accent, and other regional options. If you need multiple English accents for marketing content, Revoicer has a strong selection.
4. ファイル形式のサポート
ナチュラルリーダー: Reads 20+ file types including PDF, DOCX, EPUB, TXT, and images. You can upload documents directly or scan physical text with the OCR camera scanner. This is a major advantage for students and professionals who work with many document types.
リボイスャー: The Revoicer app is a text-to-speech tool, not a document reader. You paste or type text directly into the interface. It does not read PDFs, Word documents, or other file formats natively.
⚠️ 警告： If you need to read documents aloud, NaturalReader is the clear choice. Revoicer is built for voiceover creation, not document reading.
5. プラットフォームへのアクセス
ナチュラルリーダー: Available on web, iOS, Android, and as a Chrome extension. You can listen to webpages, Google Docs, emails, and news articles directly from your browser. Your listening progress syncs across all devices with a single account.
リボイスャー: Web-based only — no download or installation is required. There is no dedicated mobile app or browser extension. You access everything through the Revoicer website in your browser.
6. 速度と一時停止の操作
ナチュラルリーダー: Lets you adjust reading speed up to 900 words per minute. You can pick a pace that matches your listening preference. This is helpful for speed-reading long documents or slowing down complex material.
リボイスャー: Offers speech speed controls plus the ability to add pauses and emphasize specific words or even whole phrases. These controls let you build tension, convey sophistication, or add an extra layer of realism to your voiceovers.
7. 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 model and use it across your projects. This keeps your brand voice consistent across all audio content.
リボイスャー: Voice cloning is available on higher-tier plans. Brands can create consistent voice models for their digital content. The feature helps maintain a recognizable voice across adventure videos, explainer videos, and other formats.
8. 価格とコスト
| プランの種類 | ナチュラルリーダー | リボイス |
|---|---|---|
| 無料 | 月額0ドル | ❌ 無料プランはありません |
| 入場料支払い済み | 月額49ドル（シングルルーム） | 月額37ドル（標準プラン） |
| 中級クラス | 月額79ドル（チームプラン） | 月額47ドル（プロプラン） |
| トップティア | — | 月額127ドル（代理店経由） |
ナチュラルリーダー: The free version gives you unlimited access to free voices. Premium voices are capped at 20 minutes per day. Paid plans cost more per month ($49), but the free tier makes it easy to start without spending anything.
リボイスャー: Revoicer pricing starts at $37/month with no free option. The 60-day money-back guarantee is your only way to test risk-free. If you compare the cost to hiring human voiceover artists, it is still cheaper for regular voiceover creation.
さまざまなシナリオ
| 必要な場合は | 選ぶ | なぜ |
|---|---|---|
| A free text to speech tool | ナチュラルリーダー | Free plan with unlimited free voices |
| Voiceovers with voice emotions | リボイス | Built-in emotional speech controls |
| Reading PDFs and documents aloud | ナチュラルリーダー | Supports 20+ file types |
| YouTube or marketing voiceovers | リボイス | Designed for video audio content |
| 外出先でもモバイルで音楽を楽しめる | ナチュラルリーダー | iOSおよびAndroidアプリが利用可能です。 |
| Accessibility for reading disabilities | ナチュラルリーダー | Dyslexia-friendly features built in |
💰 あなたの予算
NaturalReader lets you start for free. Revoicer requires at least $37/month upfront with no trial.
🔌 あなたの技術スタック
NaturalReader works with Chrome, iOS, Android, and integrates with Google Docs and webpages. Revoicer is web-only but offers a text-to-voice API for developers building other systems.
📝 コンテンツの種類
If you read articles, PDFs, or ebooks, pick NaturalReader. If you create voiceovers for sales videos, adventure videos, or explainer videos, pick Revoicer.
🎓 あなたの経験レベル
Both tools have a user friendly interface. NaturalReader is simpler because you just upload a file and listen. Revoicer has more controls for speech speed, pauses, and emotions.
🆓 無料トライアルとデモ
NaturalReader has a permanent free version. Revoicer has no free trial, but the 60-day refund policy gives you time to test the new service before committing.
🛟 サポートオプション
NaturalReader offers NaturalReader EDU licenses for 学校 and universities. Revoicer’s customer support experience is handled through their website with email-based support.
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Revoicerに切り替えますか？
✅ 得られるもの：
- Voice emotions to add a serious tone, joyful tone, or build tension
- Multiple English accents (UK, Australian, Ireland) for targeted content
- Background music integration on higher plans
❌ 失うもの：
- Free plan access and Chrome extension for webpage reading
- PDF、DOCX、EPUBファイルの閲覧に対応
- Mobile apps for iOS and Android listening
📋切り替え方法：
- Download any audio files generated in NaturalReader before cancelling
- Revoicerのプランへの登録はrevoicer.comで行ってください。
- Paste your text scripts into Revoicer and select your preferred voice and emotion
🔄 RevoicerからNaturalReaderに切り替えますか？
✅ 得られるもの：
- A free plan with unlimited free voice access
- Reading support for 20+ file types (PDFs, DOCX, images)
- Chrome extension, iOS app, and Android app for anywhere access
❌ 失うもの：
- Detailed voice emotion controls for creating speech voice overs
- Multiple English accent options (UK, Australian, Ireland)
- Background music and SRT subtitle generation features
📋切り替え方法：
- Export all voiceover audio files from your Revoicer account
- naturalreaders.comで無料のNaturalReaderアカウントを作成してください。
- Upload your documents or paste text to start listening immediately
What Our Review Didn’t Cover
This comparison focused on individual users and small teams. We didn’t test enterprise licensing, NaturalReader Commercial for commercial use, or the Revoicer Agency plan’s API in a production environment. Our observations are based on May 2026 versions — features and pricing may have changed since then. If you need voiceovers for large-scale commercial projects, your experience may differ from what we’ve described.
最終評決
| カテゴリ | 勝者 |
|---|---|
| 💰価格 | ナチュラルリーダー |
| 🎙️ Voice Emotions | リボイス |
| 🌍 言語サポート | ナチュラルリーダー |
| 📄 ファイル形式のサポート | 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 |
| 🎛️ Speech Controls | リボイス |
| 👶 使いやすさ | ナチュラルリーダー |
| 🏆総合優勝 | ナチュラルリーダー |
🏆 受賞者：NaturalReader
NaturalReaderは7部門中5部門で受賞しました。
最適な用途: Reading documents aloud, accessibility for learning disabilities, free text to speech access
NaturalReader and Revoicer serve different purposes. NaturalReader is a reading and listening tool. Revoicer is a voiceover creation tool.
If you need to listen to PDFs, webpages, or ebooks, NaturalReader does that well. Its free version, Chrome extension, and mobile app make it accessible to anyone.
Revoicer is the better choice if you need high quality voiceovers with voice emotions for YouTube videos, sales videos, or marketing content. Its pauses emphasize specific words and phrases, helping creators pick the right tone for any project.
For most users who just need ai text to speech that works across devices and file types, NaturalReader is the stronger pick.
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, free plan availability, and 20+ file format support including EPUB and images
Speechifyが勝利した点： Mobile app experience, celebrity voice options, and speed reading features for power users
NaturalReader vs イレブンラボ
NaturalReaderが優れている点： Document reading support, accessibility features for learning disabilities, and cross-platform apps
ElevenLabsが勝利した点： Voice realism and quality, voice cloning accuracy, and developer-focused API tools
NaturalReader vs マーフAI
NaturalReaderが優れている点： Free plan, Chrome extension for webpage reading, and OCR scanner for physical text
Murf AIが勝利した点： Commercial voiceover quality, video editing integration, and team collaboration features
Revoicerの比較についてさらに詳しく
Revoicerが他の競合他社と比べてどうなのか、以下に示します。
Reviocer vs ElevenLabs
Revoicerが以下の点で勝利： Voice emotion controls, 60-day refund policy, and background music integration on higher plans
ElevenLabsが勝利した点： Voice quality and realism, larger voice library, and free tier for testing
Revoicerが以下の点で勝利： More ai voices (80+ vs fewer), multiple English accents, and SRT subtitle generation
Speecheloが勝利した点： One time payment option, lower entry price, and simpler interface for beginners
Revoicer vs Murf AI
Revoicerが以下の点で勝利： Voice emotion depth, 60-day money-back guarantee, and faster voiceover generation speed
Murf AIが勝利した点： Free trial availability, built-in ビデオエディター, and team workspace features
よくある質問
Revoicerを無料で試用できますか？
No, Revoicer does not offer a free plan or free trial. You need to purchase a subscription to access the tool. However, there is a 60-day no-questions-asked refund guarantee if the voices don’t meet your needs.
NaturalReaderは無料で利用できますか？
Yes. The free version gives you unlimited access to free voices plus 20 minutes per day of premium voices and 5 minutes per day of plus voices. No credit card is required to start.
NaturalReaderはSpeechifyより優れていますか？
It depends on your needs. NaturalReader is more affordable and supports more file types. Speechify offers a stronger mobile experience and celebrity voice options. For budget-conscious users, NaturalReader is the better fit.
最も自然な音声合成はどれですか？
Both tools produce natural sounding audio, but in different ways. NaturalReader excels at reading long documents clearly. Revoicer adds voice emotions that make ai voice overs sound closer to a human voice for video content.
Revoicerは一括払いですか？
No, the current plans are monthly subscriptions. The Standard plan costs $37/month, Pro is $47/month, and the Agency plan is $127/month. Check the Revoicer website for any lifetime deal availability.
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