📊 Our Test Results:
- 🎯 音声品質: Speechify 200+ voices vs Altered 50+ portfolio voices — Speechify wins
- ⚡ 使いやすさ: Speechify 1-click play vs Altered studio workflow — Speechify wins
- 🔒 音声モーフィング: Altered real-time morphing vs Speechify none — Altered wins
- 📝 Platform Access: スピーチファイ iOS, Android, Chrome vs Altered desktop only — Speechify wins
- 🎭 音声クローニング: Altered professional cloning vs Speechify basic cloning — Altered wins
You want to turn text into speech, but you can’t decide which tool to pick.
Speechify and Altered both use AI voices. But they solve very different problems.
Speechify reads your documents, articles, and PDFs aloud. It’s built for people who want to listen instead of read.
Altered lets you morph, clone, and edit voices for creative projects. It’s built for podcasters, game developers, and filmmakers.
One tool helps you consume content faster. The other helps you create voice content from scratch.
I tested both side by side for four weeks. Here’s exactly what I found.
概要
I spent four weeks testing Speechify vs Altered on real projects.
I used Speechify to listen to articles, PDFs, and ebooks during my commute.
I used Altered to create voiceovers, morph voices, and test the real-time voice changer.
This comparison covers pricing, features, voice quality, ease of use, and more.
Speechifyとは何ですか?
Speechify is the world’s #1 text-to-speech app. It turns any written text into natural-sounding audio.
You can listen to PDFs, articles, emails, and even physical books using OCR scanning.
The founder created Speechify to help with his own dyslexia. Today it helps thousands of people with reading disabilities like ADHD and low visual acuity.
Speechify works on iPhone, Android, Chrome, and マック. Everything syncs across your デバイス.
You can adjust reading speed from slow narration all the way up to 900 words per minute. Words highlight in real time as the app reads.
スピーチファイ
Turn any text into natural audio with 200+ AI voices. Listen to PDFs, articles, ebooks, and scanned pages at up to 900 words per minute on any device.
Speechifyの価格
Here’s what Speechify costs in 2026. Let’s break it down.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 限定 | 月額0ドル | Testing basic features |
| 年間 | 月額11.58ドル | Regular listeners (best value) |
| 毎月 | 月額29ドル | Short-term or casual users |
無料トライアル: Yes — 3-day free trial of the premium plan. No credit card needed to start the free plan.
返金保証: Contact support within the first few days. Auto-renewal applies to annual plans.
📌 注記： The annual plan saves you over 60% compared to monthly billing. The free plan gives you basic voices with limited reading speed.
⚠️ Warning: Some users report being charged the full annual fee right after the trial ends. Cancel before the 3 days are up if you’re not ready to commit.
Key Benefits of Speechify
Here’s why Speechify stands out from the competition:
- OCR Scanning: Point your phone at a printed page. Speechify reads it aloud 即座に. Great for physical textbooks.
- Speed Control: Adjust reading speed up to 900 words per minute. Most users find 200-400 WPM the sweet spot.
- クロスプラットフォーム同期: Start on your phone. Continue on your laptop. Everything syncs across iOS, Android, and Chrome.
- Text Highlighting: Words light up as they’re read. This helps you follow along and boosts retention.
- 60+ Languages: Listen to content in dozens of languages. Perfect for language learners or multilingual users.
- Offline Listening: Download audio for times when you don’t have internet. Listen on planes, trains, or anywhere.
Speechify Pros & Cons
✅ Pros
- Works on every device (iOS, Android, Chrome, Mac)
- 200+ natural-sounding AI voices to choose from
- OCR reads physical books and handwritten text
- Real-time text highlighting for better focus
- Great for people with dyslexia or ADHD
❌ Cons
- Premium voices locked behind paid plan
- Speeds above 500 WPM become hard to understand
- Annual billing can feel expensive at $139/year
- No voice morphing or cloning features
Altered とは何ですか?
Altered is an AI voice content creation platform. It lets you morph, clone, and edit voices for media production.
Think of it like a photo editor — but for your voice. You record audio, and Altered changes it into a completely different voice.
It’s built for podcasters, game developers, and film producers who need professional voice performances.
改変
Transform your voice with AI-powered morphing, cloning, and editing. Create professional voiceovers, dub content in 75+ languages, and drive multi-character productions solo.
Altered Pricing
Here’s what Altered costs in 2026. Let’s break it down.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 無料 | 月額0ドル | Testing basic voice editing |
| クリエイター | 月額30ドル | Indie creators and podcasters |
| プロ | 月額90ドル | Studios and production teams |
無料トライアル: Yes — the free plan lets you test basic features. You can also try a free trial of the Creator plan.
返金保証: Contact Altered support for refund details on Professional and Enterprise plans.
📌 注記： The Creator plan includes voice cloning, morphing, text-to-speech, and the voice editor. Most users start here.
⚠️ Warning: The free plan is very limited. You need the Creator plan at $30/month to access voice cloning and morphing.
Key Benefits of Altered
Here’s why Altered stands out from the competition:
- 音声モーフィング: Record your voice and change it to sound like someone else. Keep the emotion and timing. Only the voice changes.
- 音声クローニング: Create a digital copy of any voice. Use it to generate new audio without re-recording.
- 14 Speaking Styles: Choose from whispering, shouting, narration, news, and more. Each style changes how the AI delivers lines.
- Real-Time Voice Changer: Change your voice during live calls or gaming sessions. Works with major communication apps.
- 75+ Language Translation: Transcribe and translate your audio into dozens of languages. Great for dubbing content.
- AI音声クリーナー: Remove background noise from recordings. Get clean, studio-quality audio without a studio.
Altered Pros & Cons
✅ Pros
- Voice morphing keeps your performance but changes the voice
- Professional-grade voice cloning for media production
- Real-time voice changer for live calls and gaming
- 14 emotive speaking styles for TTS
- Supports 75+ languages for translation and dubbing
❌ Cons
- No mobile app — desktop and web only
- Creator plan at $30/month is pricey for beginners
- Steep learning curve for voice morphing tools
- Not built for reading documents or articles aloud
機能比較
Ready to dive into a detailed comparison of Speechify vs Altered?
We’ll explore 9 key features to help you pick the right tool.
| 特徴 | スピーチファイ | 改変 |
|---|---|---|
| 開始価格 | 月額11.58ドル | 月額30ドル |
| 無料プラン | ✅ | ✅ |
| テキスト読み上げ | ✅ (Core feature) | ✅ (With speaking styles) |
| 音声クローン | ❌ (Studio only) | ✅ |
| 音声モーフィング | ❌ | ✅ |
| OCR Scanning | ✅ | ❌ |
| Real-Time Voice Changer | ❌ | ✅ |
| モバイルアプリ | ✅ (iOS & Android) | ❌ |
| 最適な用途 | Reading & listening | Voice content creation |
1. Text-to-Speech Quality
スピーチファイ： Offers 200+ AI voices across 60+ languages. The voices sound natural and clear. You can adjust speed, ピッチ, and voice style. Most users love the celebrity voice options like Snoop Dogg.
変更: Provides premium TTS with 14 speaking styles. Voices can whisper, shout, narrate, or deliver news-style reads. The quality is high, but the voice library is smaller than Speechify’s.
2. Voice Cloning
スピーチファイ： Voice cloning is available through Speechify Studio, which is a separate product. The main Speechify app focuses on reading text, not creating custom voices.
変更: Voice cloning is built right into the platform. Record a short sample, and Altered creates a digital copy of that voice. You can then use it for any project.
⚠️ Warning: Voice cloning raises ethical questions. Always get permission before cloning someone else’s voice. Some regions have strict laws about this.
3. 音声モーフィング
スピーチファイ： Does not offer voice morphing. Speechify is built for listening to text, not transforming voice recordings.
変更: This is Altered’s signature feature. Record your voice, and Altered morphs it into a different character. You keep the emotion, timing, and delivery. Only the voice itself changes.
4. Platform and Device Support
スピーチファイ： Available everywhere. Use it on iPhone, Android, Chrome, Edge, Safari, and Mac. Everything syncs across devices. Start reading on your phone and finish on your laptop.
変更: Runs as a desktop app on Windows and Mac, plus a web-based editor. There is no mobile app. You need a computer to use Altered Studio.
5. OCR and Document Reading
スピーチファイ： Uses optical character recognition to scan printed pages and images. Point your camera at a book page, and Speechify reads it out loud. It also handles PDFs, Google Docs, and web articles.
変更: Does not have OCR or document reading features. Altered is built for voice editing and creation, not consuming written content.
6. Real-Time Voice Changing
スピーチファイ： No real-time voice changer. Speechify reads text to you. It doesn’t modify your speaking voice during calls.
変更: Offers a real-time voice changer for live calls and gaming. It works with Zoom, Discord, and other communication platforms. The latency is very low.
7. 言語サポート
スピーチファイ： Supports 60+ languages for text-to-speech. Great for language learners who want to hear proper pronunciation in different languages.
変更: Supports 75+ languages for transcription and translation. You can dub your audio content into dozens of languages. Perfect for global content creators.
8. 使いやすさ
スピーチファイ： Dead simple. Paste text, click play. Upload a PDF, click play. Scan a page, click play. Anyone can Speechifyを使用する in seconds. No learning curve at all.
変更: More complex. The studio interface has many tools for voice editing, morphing, and cloning. It takes time to learn. Beginners may feel overwhelmed at first.
💡 Test Result: Speechify took 30 seconds to start listening. Altered took 15 minutes to set up my first voice morphing project. The tools serve very different purposes.
9. Pricing & Cost
Let’s compare the pricing plans side by side.
| Plan Level | スピーチファイ | 改変 |
|---|---|---|
| 無料 | $0/month (limited) | $0/month (basic editing) |
| Mid-Tier | $11.58/month (annual) | $30/month (Creator) |
| トップティア | $29/month (monthly) | $90/month (Professional) |
スピーチファイ： Much cheaper overall. The annual plan comes out to just $11.58/month. Even the monthly plan at $29 is still less than Altered’s Creator tier.
変更: More expensive, but you’re paying for professional voice production tools. The Creator plan at $30/month unlocks cloning, morphing, and all speaking styles.
Different Scenarios
| If You Need… | Choose | Why |
|---|---|---|
| Listen to articles and PDFs | スピーチファイ | Built for content consumption |
| Clone or morph voices | 改変 | Professional voice AIツール |
| Tight budget | スピーチファイ | 61% cheaper per month |
| Mobile access on the go | スピーチファイ | iOS & Android apps available |
| Game or ポッドキャスト ナレーション | 改変 | Voice morphing & 14 styles |
| Reading disability support | スピーチファイ | OCR, highlighting, speed control |
💰 Your Budget
Speechify starts at $11.58/month on the annual plan. Altered’s cheapest paid plan is $30/month. Pick Speechify if cost matters most.
🔌 Your Tech Stack
Speechify works on phones, tablets, and browsers. Altered runs on desktop computers only. Choose based on where you work most.
📝 Your Content Goals
Want to listen to written content? Pick Speechify. Want to create voice content? Pick Altered. These tools solve opposite problems.
🎓 Your Experience Level
Speechify needs zero learning. Click play and listen. Altered requires time to learn voice morphing and studio tools. Beginners should start with Speechify.
🆓 Free Trials and Demos
Both offer free plans. Speechify also gives a 3-day premium trial. Test both before you buy. It’s the best way to find your fit.
🛟 Support Options
Speechify has in-app support and a help center. Altered offers email support and a dedicated help center. Both respond within 24 hours.
Switching Guide
Already using one of these tools? Here’s what to expect if you switch.
🔄 Switching from Speechify to Altered?
✅ What you’ll gain:
- Voice morphing to create multiple characters from one recording
- Professional voice cloning for media projects
- Real-time voice changer for live calls and gaming
❌ What you’ll lose:
- Mobile app access on iOS and Android
- OCR scanning for printed books and images
- Simple one-click text-to-speech listening
📋 How to switch:
- Cancel your Speechify subscription before the next billing cycle
- Sign up for Altered’s free plan at altered.ai
- Upgrade to Creator ($30/month) when you’re ready for full features
🔄 Switching from Altered to Speechify?
✅ What you’ll gain:
- Mobile app that works everywhere (iOS, Android, Chrome)
- OCR scanning to read physical books and printed text
- Lower price at $11.58/month on the annual plan
❌ What you’ll lose:
- Voice morphing and character voice creation
- Professional voice cloning tools
- Real-time voice changer for live communication
📋 How to switch:
- Export any voice projects you want to keep from Altered
- Download Speechify on your phone or install the Chrome extension
- Start with the free plan, then upgrade to annual for the best price
最終評決
| カテゴリ | 勝者 |
|---|---|
| 💰 Pricing | スピーチファイ |
| 🎙️ Text-to-Speech | スピーチファイ |
| 🎭 Voice Cloning | 改変 |
| 🔊 Voice Morphing | 改変 |
| 👶 Ease of Use | スピーチファイ |
| 📱 Platform Access | スピーチファイ |
| 🌍 Language Support | 改変 |
| 🏆 Overall Winner | スピーチファイ |
🏆 WINNER: Speechify
Speechify wins 4 out of 7 categories.
Best for: Students, professionals, people with reading disabilities, and anyone who wants to listen instead of read.
Speechify and Altered are built for completely different jobs.
Speechify turns written text into audio so you can listen on the go. It’s simple, affordable, and works on every device.
Altered transforms voices for creative projects. It’s powerful, but complex and expensive.
If you need to create professional voiceovers or morph voices, Altered is your pick.
But for most people who just want to listen to articles, PDFs, and ebooks, Speechify is the clear winner.
Now, go out and start listening smarter!
More of Speechify Compared
Here’s how Speechify stacks up against other competitors:
Speechify vs マーフAI
Speechify wins on: Reading content aloud, mobile app, OCR scanning
Murf AI wins on: Studio-grade voiceovers, voice customization
Speechify vs Play.ht
Speechify wins on: Ease of use, cross-platform sync, speed control
Play.ht wins on: Blog-to-audio embeds, API access for developers
Speechify vs ロボ
Speechify wins on: Document reading, offline listening, OCR
Lovo wins on: Video voiceover creation, emotion control
Speechify vs 説明
Speechify wins on: Text-to-speech simplicity, mobile access
Descript wins on: Full podcast/video editing, transcription
Speechify vs イレブンラボ
Speechify wins on: Reading documents, OCR, multi-device sync
ElevenLabs wins on: Voice cloning quality, API for developers
Speechify vs リスト番号
Speechify wins on: Consumer reading experience, platform support
Listnr wins on: Podcast hosting, audio widget embeds
Speechify vs ポッドキャスト
Speechify wins on: Document reading, speed control, OCR
Podcastle wins on: Podcast recording, AI audio editing
Speechify vs ダプダブ
Speechify wins on: Cross-platform access, reading accessibility
Dupdub wins on: Video dubbing, アバター 創造
Speechify vs ウェルサイドラボ
Speechify wins on: Personal reading, free plan, mobile app
WellSaid Labs wins on: Enterprise voiceovers, brand voices
Speechify vs リボイス
Speechify wins on: Reading experience, OCR, platform support
Revoicer wins on: One-time pricing, emotion-rich voices
Speechify vs リードスピーカー
Speechify wins on: Consumer app, speed control, free plan
ReadSpeaker wins on: Enterprise web integration, compliance
Speechify vs ナチュラルリーダー
Speechify wins on: Mobile experience, OCR, voice variety
NaturalReader wins on: Desktop software, one-time purchase option
Speechify vs スピーチロ
Speechify wins on: Reading documents, platform access, OCR
Speechelo wins on: One-time payment, voiceover creation
Speechify vs TTS OpenAI
Speechify wins on: Consumer reading app, offline listening
TTS OpenAI wins on: Developer API, voice quality per token
Speechify vs ヒューム
Speechify wins on: Ease of use, reading accessibility
Hume wins on: Emotion AI, empathic voice technology
More of Altered Compared
Here’s how Altered stacks up against other competitors:
Altered vs Hume
Altered wins on: Voice morphing, cloning, studio editing
Hume wins on: Emotion detection AI, empathic voice
オルタード vs マーフ 人工知能
Altered wins on: Voice morphing, real-time changer
Murf AI wins on: Simpler voiceover workflow, pricing
Altered wins on: Voice morphing, speaking styles, cloning
Descript wins on: Full video editing, screen recording
Altered wins on: Voice morphing, speaking styles, studio editor
ElevenLabs wins on: Voice quality, API access, pricing
Altered vs Play.ht
Altered wins on: Voice morphing, real-time changer, cloning
Play.ht wins on: Blog audio embeds, ease of use
Altered wins on: Voice morphing, studio-grade editing
Lovo wins on: Video voiceovers, simpler interface
Altered wins on: Professional voice production tools
Listnr wins on: Podcast hosting, audio widgets
Altered wins on: Voice morphing, multi-character creation
Podcastle wins on: Podcast recording and publishing
Altered wins on: Voice morphing technology, studio tools
Dupdub wins on: Video dubbing, avatar generation
Altered wins on: Voice morphing, real-time changer
WellSaid Labs wins on: Enterprise features, brand voice control
Altered wins on: Professional studio, voice cloning
Revoicer wins on: One-time pricing model, simplicity
Altered wins on: Creative voice tools, morphing
ReadSpeaker wins on: Enterprise web TTS, accessibility
Altered wins on: Voice morphing, professional production
NaturalReader wins on: Simple reading, one-time purchase
Altered vs Speechelo
Altered wins on: Advanced voice AI, studio editing
Speechelo wins on: One-time payment, basic voiceovers
Altered vs TTSOpenAI
Altered wins on: Voice morphing, speaking styles, editor
TTSOpenAI wins on: API simplicity, pay-per-use pricing
よくある質問
Is Speechify actually free?
Speechify has a free plan with basic voices and limited speed control. Premium voices and full features need a paid subscription starting at $11.58/month (annual billing).
Is Altered AI free?
Altered offers a free plan with basic voice editing. Voice cloning and morphing require the Creator plan at $30/month. The free version is very limited.
What is the best Speechifyの代替 in 2026?
For reading content aloud, NaturalReader and ElevenLabs are strong options. For voice creation, Altered or Murf AI are better choices. It depends on your goal.
Is AI voice cloning illegal?
Voice cloning itself is not illegal in most places. But using someone’s voice without permission can break privacy laws. Always get consent before cloning a voice.
Which is better for people with dyslexia — Speechify or Altered?
Speechify is built specifically for people with reading disabilities. It has OCR, text highlighting, and adjustable speed. Altered is not designed for accessibility use cases.
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