⚡ Quick Verdict:
- 価格: Speechify starts at $11.58/month (annual) vs Altered AI at $30/month (Creator plan).
- 最適な用途: Speechify is for people who want to listen to text. Altered AI is for creators producing voice content.
- 主な違い： Speechify reads any written text aloud. Altered Studio creates and edits AI voices for media.
- Our pick: Speechify for most users — it’s a more popular app with broader reach across reading needs.
Speechify vs Altered AI both work with AI voices.
But they solve very different problems for very different people.
Speechify reads your written text aloud in natural sounding voices.
Altered Studio helps creators build, clone, and edit voices for media production.
One is built for listeners. The other is built for voice creators.
This guide breaks down both tools so you pick the right one.
概要
This comparison covers pricing, features, and ease of use.
We also break down who each tool works best for.
Our writers signed up for both Speechify and Altered Studio directly.
Other observations come from documentation and verified user reviews.
By the end, you’ll know which tool fits your day to day life.
Speechifyとは何ですか?
Speechify is a text to speech app that converts written text into spoken words.
It uses ai technology to turn pdf documents, articles, and emails into audio files.
The founder built it as a solution for his own dyslexia.
Today the speechify app helps people with dyslexia, ADHD, and other reading disabilities.
It bills itself as the #1 audio reader in the world.
スピーチファイ
Speechify reads any text aloud in high quality voices. It supports pdf files, web links, and printed text via OCR. The popular app helps you save time and consume more content.
Speechifyの価格
Here’s what speechify cost looks like in 2026. Let’s break it down.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 限定 | 月額0ドル | Trying basic features with non hd voices |
| 年間 | 月額11.58ドル | Regular users wanting premium voices |
| 毎月 | 月額29ドル | Short-term users without long commitment |
Pricing verified May 2026.
無料トライアル: Yes — Speechify offers a 3-day free trial of Premium. No credit card hold during sign up varies by region.
返金保証: Speechify does not advertise a standard money-back guarantee. Refunds are handled on a case-by-case basis through support.
📌 注記： The premium plan unlocks premium voices, hd voices, faster reading speed, and up to 150,000 words per month with premium voices. Speechify pricing varies from country to country.
⚠️ 警告： Speechify does not offer a monthly subscription option that’s the same price as the annual plan. The monthly subscription is $29 vs $11.58/month billed yearly. There is also no lifetime deal.
Speechifyの主なメリット
Here’s what makes Speechify worth a serious look:
- Wide Range of Content Sources: The app reads pdf documents, articles, emails, and web links. You can simply upload a file or paste a link to convert text into audio content quickly.
- 光学文字認識： Speechify reads printed text from photos using its ocr reader. You can scan physical books and turn them into audio.
- Adjustable Reading Speed: The average reading speed for humans is around 250 words per minute. Speechify lets you push up to 900 words per minute, which fits both casual readers and language learners.
- Real-Time Text Highlighting: Active text highlighting syncs with the audio file as it plays. This boosts retention for auditory learners and visual readers alike.
- Multiple Languages and Voices: Speechify supports 60+ different languages with lifelike ai voices. Premium subscription plans give you access to over 1,000 voice options with customizable options for speed and pitch.
- クロスプラットフォームアクセス: The android app and iOS app sync with the chrome extension, allowing users to start listening on desktop and finish on mobile.
What Our Team Noticed
私たちの 作家 signed up for Speechify and used it for a few weeks across articles, pdf files, and printed pages. This is a quick speechify review of what stood out — both how it enhances productivity and where it falls short as a valuable tool for daily reading. Hearing and reading at the same time improves comprehension, which is backed by academic research:
Speechifyの長所と短所
✅ メリット
- Reads pdf files, emails, web links, and printed text in one app
- Premium voices sound natural and support multiple languages
- Available on iOS, android app, and as a chrome extension
- Adjustable reading speed up to 900 words per minute
- Helps people with dyslexia, ADHD, and other reading disabilities
❌ デメリット
- The basic version is speechify limited compared to premium
- No monthly subscription that matches annual pricing
- Voices may lack the emotional nuances of human narration
- Can feel expensive compared to some alternatives like MicMonster
Altered とは何ですか?
Alteredは、メディア制作向けに構築された音声コンテンツ作成プラットフォームです。
Altered Studio combines voice cloning, voice morphing, and text to speech in one tool.
It’s used by podcasters, video game publishers, and film production companies.
The platform integrates multiple voice ai technologies into a single user friendly application.
Creators describe it as a next generation audio editor for AI voices.
改変されたAI
Altered AI is a voice content creation platform for media producers. It combines voice cloning, real time voice changer tools, and 14 speaking styles. The online audio editor reduces the time and cost of recording voice overs.
AIの価格設定変更
Here’s what Altered Studio 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 | Trying basic voice editing features |
| クリエイター | 月額30ドル | Solo creators and freelance voice creators |
| プロ | 月額90ドル | Agencies and full media production teams |
Pricing verified May 2026.
無料トライアル: Yes — you can sign up for a free trial of the Creator plan on the Altered Studio website.
返金保証: Altered does not advertise a public money-back guarantee. For Professional or Enterprise subscriptions, users need to visit the pricing page on the website.
📌 注記： The free plan gives you a taste of voice editing, while paid tiers unlock advanced voice features like rapid voice clone, the extensive voice library, and more portfolio tts voices. Higher tiers also include better noise removal for voice recordings.
⚠️ 警告： Altered AI is much pricier than Speechify on the entry paid tier. If you only need text to speech reading, this tool is built for media production needs you may not have.
Key Benefits of Altered AI
Here’s what makes Altered Studio stand out for voice content creators:
- 音声クローン技術： Rapid voice clone lets you create custom voice models from a short sample. The ai voice cloning preserves vocal identity for repeated use.
- リアルタイム音声変換機能： The real time voice changer is useful for voice chats on diverse platforms. It includes background noise cancellation built in.
- 14種類の話し方： Emotive text to speech offers flexible voicing for dialogue. Styles include whispering and shouting for voice puppeteering.
- AI音声クリーナー: The ai voice cleaner removes background noise from voice recordings. It helps voice performances sound studio-quality without expensive gear.
- Voice Editor and History: The voice editor includes history editing so you can revert to previous versions. This protects voice content creation work from costly mistakes.
- 文字起こしと翻訳： The platform supports the creation of custom voice models. It also lets you transcribe audio and translate content into multiple languages for global media production.
What Our Team Noticed
Our writer signed up for Altered Studio and explored the voice cloning, voice morphing, and text to speech tools. Here’s what stood out from that hands-on time:
Altered AI Pros & Cons
✅ メリット
- Combines voice cloning, voice morphing, and text to speech in one app
- Real time voice changer with effective noise cancellation
- 14 Speaking Styles cover dialogue, whispering, shouting, and more
- History editing protects long voice recordings from lost edits
- Trusted by professional voice creators in podcasts and games
❌ デメリット
- Creator plan is more expensive than Speechify Annual
- Not designed to read articles, pdf files, or emails to you
- Steeper learning curve for users new to voice editing
- Enterprise pricing not public — must contact sales
機能比較
Ready to dive into a detailed comparison of Speechify vs Altered? We’ll explore the key features so you can match each tool to your real needs. Most differences map directly to who each app is built for.
| 特徴 | スピーチファイ | 改変されたAI |
|---|---|---|
| 開始価格 | 月額11.58ドル（年間契約） | 月額30ドル（クリエイター向け） |
| 無料プラン | ✅ | ✅ |
| テキスト読み上げ | ✅ (reading focus) | ✅ (creator focus) |
| Reads PDFs and Web Pages | ✅ | ❌ |
| OCR for Printed Pages | ✅ | ❌ |
| AI音声クローン | ✅ | ✅ |
| Real Time Voice Changer | ❌ | ✅ |
| Voice Morphing & Speaking Styles | ❌ | ✅ |
| Chrome拡張機能 | ✅ | ❌ |
| 最適な用途 | Listeners and accessibility | 音声コンテンツクリエイター |
1. テキスト読み上げ
スピーチファイ： Speechify text to speech is built around consumption. The speechify app converts written text into spoken words using premium voices, hd voices, and non hd voices on the free plan. It reads pdf documents, articles, and emails out of the box.
改変されたAI: Altered’s premium text to speech is built around creation, not reading. The voice library includes portfolio tts voices and supports 14 Speaking Styles for dialogue, whispering, and shouting. Combined with text editing tools and the voice editor, it outputs polished voice content for media projects rather than casual listening.
⚠️ 警告： If you want a tool that simply reads articles to you on a commute, the speechify text to speech model fits better than Altered’s creator focused approach.
2. Voice Options and Voice Library
スピーチファイ： Speechify offers over 1,000 ai voices across 60+ different languages. Voices include human like voices designed for long listening sessions. The speechify library covers narration styles, accents, and reading-friendly tones.
改変されたAI: Altered’s extensive voice library focuses on character and performance work. Voice creators can use multiple voice ai technologies, ai voice cloning for vocal identity, and voice puppeteering tools. It’s built for high quality voice content rather than reading volume.
3. AI音声クローニング
スピーチファイ： Speechify includes ai voice cloning on higher premium subscription plans. You can clone your own voice or a celebrity-style voice and use it in the app. The cloning is solid but secondary to the core reading experience.
改変されたAI: Voice cloning technology is at the heart of Altered Studio. Rapid voice clone produces a usable model from a short voice sample. It’s built for repeatable voice content creation across episodes, characters, and projects.
4. Voice Morphing and Real Time Voice Changer
スピーチファイ： Speechify does not offer voice morphing or a real time voice changer. It’s focused on converting text into speech, not transforming a live voice into another character.
改変されたAI: Altered’s voice morphing and real time voice changer are core features. The advanced voice ai technology lets you alter your voice for voice chats, gaming, or live streams. Background noise cancellation runs while you talk.
5. PDF and Document Reading
スピーチファイ： Speechify reads pdf files, pdf documents, and almost any digital content directly. You can simply upload, paste a link, or import text. The app’s ability to handle long documents is one of its biggest strengths.
改変されたAI: Altered is not built to read pdf files for you. It’s an audio editor for voice content, so document reading isn’t part of the workflow. If listening to documents is your goal, this is the wrong tool.
6. OCR and Printed Text Reading
スピーチファイ： Speechify uses optical character recognition to read printed text from photos. The ocr reader can scan physical books, handwritten notes, and even some signs. This makes it a versatile app for offline materials.
改変されたAI: Altered does not advertise optical character recognition. It expects you to bring your own text or audio for voice processing. OCR is outside the scope of what this online audio editor does.
7. Reading Speed and Text Highlighting
スピーチファイ： The speechify app lets you adjust reading speed up to 900 words per minute, far above the average reading speed. Real-time text highlighting follows along while audio plays. This boosts comprehension and helps auditory learners stay focused.
改変されたAI: Altered does not include a speed reader or synced text highlighting. Its focus is on producing finished voice files, not optimizing your listening experience. Speed and pitch adjustments exist but apply to voice editing, not reading flow.
8. Voice Cleaning and Voice Editing
スピーチファイ： Speechify is not a voice editing tool. It generates audio output from text but doesn’t offer multi-track voice editing or noise removal for your own voice recordings.
改変されたAI: Altered includes an ai voice cleaner that removes background noise from existing recordings. The voice editor adds history editing, so creators can roll back changes. These tools simplify audio production for voice creators.
9. Platforms and Apps
スピーチファイ： Speechify is available on iOS, the android app, and as a chrome extension. You can install speechify today on most devices and listen across them. The app also offers offline content listening for when you’re away from Wi-Fi.
改変されたAI: Altered Studio runs as a web-based online audio editor. There is no chrome extension and the platform is built for desktop voice work, not mobile listening. Integrations focus on media production workflows.
10. API and Developer Access
スピーチファイ： Speechify provides API access on higher tiers, so developers can plug speechify text into their own products. This is useful for apps that want to add reading support quickly.
改変されたAI: Altered offers developer access on Professional and Enterprise plans for voice content creation pipelines. This suits studios automating voice generation across many projects.
価格とコスト
料金プランを並べて比較してみましょう。
| プラン | スピーチファイ | 改変されたAI |
|---|---|---|
| 無料プラン | 月額0ドル（制限あり） | 月額0ドル（無料） |
| 入場料支払い済み | 月額11.58ドル（年間契約） | 月額30ドル（クリエイター向け） |
| 上位ティア | 月額29ドル（月払い） | 月額90ドル（プロフェッショナルプラン） |
スピーチファイ： Speechify pricing is much cheaper on the entry paid plan when billed annually. The premium subscription unlocks premium voices, hd voices, and the 150,000 word per month allowance. There is no monthly subscription that matches annual pricing, but the value at $11.58/month is hard to match for a reading-focused app.
改変されたAI: Altered AI’s Creator plan starts at $30/month. That’s higher than Speechify, but you get a full set of voice cloning, voice morphing, and audio storytelling tools. For a professional voice creator producing voice content for clients, that price often pays for itself quickly.
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 | スピーチファイ | $11.58/mo on Annual plan |
| Read pdf files and articles aloud | スピーチファイ | OCR reader and pdf support |
| Voice cloning for media production | 改変されたAI | Built around rapid voice clone |
| Real time voice changer for streams | 改変されたAI | Live voice morphing built in |
| Listen on phone during commute | スピーチファイ | iOS, android app, chrome extension |
| Beginner friendly accessibility tool | スピーチファイ | Designed for reading disabilities |
| Audio storytelling and games | 改変されたAI | 14 Speaking Styles + voice editor |
💰 あなたの予算
Speechify is the cheaper option at $11.58/month on Annual. Altered’s Creator plan is $30/month, which makes sense only if you need media production tools.
🔌 あなたの技術スタック
Speechify plugs into your phone and browser via the chrome extension. Altered Studio is desktop-first and built to sit alongside DAWs and editing tools.
📝 あなたの文章スタイル
If you mostly read articles, books, or pdf documents and want them spoken back, Speechify wins. If you write scripts, podcasts, or game dialogue and need professional voice output, Altered fits better.
🎓 あなたの経験レベル
Speechify is friendlier for first-time users and people exploring text to speech. Altered AI assumes some familiarity with voice editing and audio production.
🆓 無料トライアルとデモ
Speechify offers a 3-day free trial of Premium plus a free version with limited features. Altered offers a Free plan and a Creator plan trial, so you can test the platform before paying.
🛟 サポートオプション
Speechify users tend to rely on in-app help and a deep knowledge base. Altered’s support skews toward professional voice creators, with documentation aimed at media production workflows.
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 Speechify to Altered AI?
✅ 得られるもの：
- Voice cloning technology built for repeatable voice content creation
- Real time voice changer with background noise cancellation
- 14 Speaking Styles for dialogue, voice puppeteering, and audio storytelling
❌ 失うもの：
- The ocr reader and ability to scan printed text
- Reading pdf documents, emails, and web articles aloud
- The chrome extension and smooth mobile listening experience
📋切り替え方法：
- Cancel Speechify Premium under account settings before renewal
- Sign up for the Altered Studio free trial on the Creator plan
- Re-create any voice clones from scratch — voice models do not transfer
🔄 Switching from Altered AI to Speechify?
✅ 得られるもの：
- A reading-focused app that converts text into audio across devices
- Optical character recognition for printed pages and physical books
- Cheaper monthly cost on the Annual plan
❌ 失うもの：
- The voice editor and history editing for fine-tuned voice work
- Real time voice changer for live voice chats and streaming
- Voice morphing across multiple voice ai technologies in one tool
📋切り替え方法：
- Export any final voice files from Altered Studio for safekeeping
- Cancel your Altered subscription on the billing page
- Install Speechify today on iOS, android, or as a chrome extension
What Our Review Didn’t Cover
This comparison focused on individual users and small creator teams. We didn’t deeply test enterprise voice cloning rights, custom Altered Professional features, or Speechify’s 学校 and team plans. We also didn’t measure side-by-side audio quality across every voice option in both apps. If you’re working at scale or with strict compliance needs, your priorities may differ from what we’ve covered here.
最終評決
| カテゴリ | 勝者 |
|---|---|
| 💰価格 | スピーチファイ |
| 📚 Reading PDFs & Documents | スピーチファイ |
| 🎙️ Voice Cloning & Morphing | 改変されたAI |
| ⚡ Speed & Listening Experience | スピーチファイ |
| 🎬 Media Production Tools | 改変されたAI |
| 👶 Ease of Use for Beginners | スピーチファイ |
| 📱 Cross-Platform Availability | スピーチファイ |
| 🏆総合優勝 | スピーチファイ |
🏆 WINNER: SPEECHIFY
Speechifyは7部門中5部門で受賞した。
最適な用途: Listening to articles and pdf documents, accessibility for reading disabilities, students and professionals who want to enhance productivity
Speechify and Altered AI are two very different products that share the term ai voices. Speechify is a popular app for converting text into spoken words you can listen to. Altered Studio is a voice content creation platform for professional voice creators.
Altered is excellent for podcasters, video game publishers, and film teams who need voice cloning, voice morphing, and a real time voice changer. The platform supports the creation of custom voice models and lets you transcribe audio and translate content into multiple languages. It is a powerful tool when audio is the product.
However, if you simply want a versatile tool that reads written text aloud, Speechify is the better choice. It’s cheaper, easier to use, and built specifically for the reading experience. For most readers, students, and accessibility users, Speechify stands as the more practical pick.
Speechifyの比較
Here’s how Speechify stacks up against other competitors in the text to speech space:
Speechify vs ナチュラルリーダー
Speechifyが勝利した点： Mobile experience, premium voices count, chrome extension polish
NaturalReaderが優れている点： Lifetime license option, simpler pricing, education-focused features
Speechify vs マーフAI
Speechifyが勝利した点： Reading articles and pdf files, ocr reader, day to day life accessibility
Murf AIが勝利した点： Studio-style voice over editing, team collaboration, project-based workflow
Speechify vs イレブンラボ
Speechifyが勝利した点： Listening features, cross-device syncing, simpler interface for non-creators
ElevenLabsが勝利した点： Voice realism, advanced cloning fidelity, developer API depth
Speechify vs Play.ht
Speechifyが勝利した点： Reading-first design, mobile apps, support for printed text via OCR
Play.htが勝利した点： Long-form audio publishing, ポッドキャスト workflow, embeddable players
More of Altered AI Compared
Here’s how Altered Studio stacks up against other voice content creation platforms:
Altered AI vs ElevenLabs
Alteredが勝利した試合： Real time voice changer, voice puppeteering, editor history, and integrated audio cleaner
ElevenLabsが勝利した点： Sheer voice quality, multilingual cloning, and a richer developer platform
改変されたAI対 説明
Alteredが勝利した試合： Voice morphing, 14 Speaking Styles, and voice cloning for character work
説明文が勝つ点： Full video editing, collaborative transcripts, and overdub for podcasters
Altered AI vs Murf AI
Alteredが勝利した試合： Voice cloning, real time voice changer, and human talent voice replication for games
Murf AIが勝利した点： Polished marketing voice overs, easier non-technical workflows, and team management
Altered AI vs Lovo
Alteredが勝利した試合： Advanced voice ai technology, voice editing depth, and rapid voice clone setup
Lovoが勝利した点： Marketing video voice overs, large emotion library, and simpler dashboard
よくある質問
Speechifyは本当に無料ですか？
Speechify offers a free plan with non hd voices and limited features. The basic version reads text but caps voice quality and word counts. For premium voices and advanced features, you need the paid premium plan.
Speechifyよりも優れたものは何ですか？
For pure text to speech reading, Speechify is one of the strongest picks on iOS, android app, and chrome extension. For voice creation work, Altered AI or ElevenLabs may suit you better. The right answer depends on whether you want to listen or to create.
Speechifyの料金はいくらですか？
The Annual plan works out to $11.58/month. The Monthly plan is $29/month, while the Limited tier is free. Pricing varies from country to country.
Altered AIは無料ですか？
Altered AI offers a Free plan that lets you try basic voice features. Paid plans start at $30/month for the Creator tier. There is also a free trial of higher tier features.
Which is the best text to speech and voice AIツール?
For listening to articles, pdf documents, and printed text, Speechify is the better pick for most users. For creating high quality voice content, voice cloning, and real-time voice morphing, Altered Studio is the stronger tool. Choose based on your job, not the brand.
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