# CastReader vs Voice Out CastReader records 55,999 monthly visits with +9.8% month-over-month growth and Freemium pricing. Voice Out records 39,679 monthly visits with -27.1% growth and Freemium pricing. | Metric | [CastReader](https://openaitools.app/tool/castreader) | [Voice Out](https://openaitools.app/tool/voice-out) | | :--- | :--- | :--- | | Website URL | https://castreader.com | https://voiceout.app | | Categories | AI Text-to-Speech, AI Speech Synthesis, AI Reader | AI Text-to-Speech, AI Speech Synthesis, AI Voice Generator, AI Reader | | Pricing Model | Freemium | Freemium | | Monthly Visits | 55,999 | 39,679 | | MoM Growth Rate | +9.8% | -27.1% | | Primary Market | United States | United States | | Direct Visits | 19,699 | 28,006 | | Review Score | 4.4 | 4.3 | | Saved Count | 0 | 0 | | Supported Platforms | Website | Website | ## CastReader CastReader is built for people who want to consume long-form text with their ears as well as their eyes. Once installed as a Chrome or Edge extension, or opened as an iPhone, iPad or Android app, it reads supported pages and documents aloud using natural AI voices while a word-synced highlight and auto-scroll keep your place. A public Voice Hub lets you preview real voice samples by language before committing, and playback speed ranges from standard rates up to 3x on the paid plan. What separates it from a plain screen reader is a feature called Read & Explain. Instead of only pronouncing a dense or foreign-language paragraph, CastReader works out what it means and walks you through it in the language you know best, while an animated pen circles and underlines the relevant lines in the original text. That mix of eyes-on-page and ears-on-explanation is aimed at research papers, technical documentation, foreign-language news and other long reads where passive narration is not enough. Sources are organised into four families: book platforms such as Kindle, WeRead, Google Play Books, Libby, Kobo and O'Reilly; articles and subscriptions including Medium, Substack, The Atlantic, The New Yorker and major newspapers; work documents and email such as Google Docs, Notion, Gmail and Google Drive; and AI conversations from ChatGPT, Claude, Gemini, DeepSeek and Kimi. CastReader also offers private voice cloning for your own documents and a developer Voice API for embedding cloned speech into applications. Free use needs no account, and payments are handled by Stripe. **Pricing & Plans:** Freemium. Free plan: $0 forever with 20 minutes of listening per day, standard voices up to 1.25x speed, 3 AI explains per day, and 30,000 translation characters per day when signed in. Pro: $4.99/month or $35.99/year (about $3/month, 40% saving) removing the daily listening cap, unlocking full ebooks and long PDFs, more premium voices up to 3x speed, unlimited daily explains, 120 personal-voice minutes per membership month, and 3,000,000 translation characters per month. A 3-day free trial is available; billing is via Stripe. - **Synced read-aloud:** Natural AI voices narrate webpages, PDFs, ebooks and documents while each spoken word is highlighted and the page auto-scrolls, so you never lose your place. - **Read & Explain:** Instead of only reading a hard passage, CastReader summarises and unpacks its meaning in the language you know best, with an animated pen marking the key lines in the original text. - **Wide source coverage:** Works across Kindle, WeRead, Google Play Books, O'Reilly and other book platforms, news and newsletter sites, Google Docs, Notion, Gmail, plus ChatGPT, Claude, Gemini, DeepSeek and Kimi answers. - **Voice Hub and voice cloning:** Preview real samples of dozens of voices across many languages, and create private cloned voices that Pro members can apply to their own PDF, EPUB, Word and TXT files. - **Developer Voice API:** A REST API for text-to-speech and private voice cloning in 10 languages, returning MP3 or WAV, priced at $8 per 1M characters for successful generations. **Strengths:** Combines plain read-aloud with guided explanations that point back at the source text; Covers an unusually broad set of sources, from Kindle and Gmail to ChatGPT and Claude answers; Free tier is genuinely usable with no account required, and the 3-day Pro trial needs no commitment; Personal voice cloning and a pay-per-success Voice API extend it beyond a simple reader **Limitations:** The 20-minute daily listening cap on the free plan runs out quickly for long books or PDFs; Source support and iOS previews vary by platform, browser version and content access rules; Applying a cloned voice to your own text is limited to 120 minutes per membership month even on Pro [Profile (Markdown)](https://openaitools.app/tool/castreader.md) ## Voice Out Voice Out is a text-to-speech (TTS) tool built primarily as a Chrome and Edge extension. Once installed, a single click on the toolbar button starts reading the current page aloud, whether that is an article, a Google Doc, a PDF or an ebook. Playback can be paused, skipped forward or backward, and listened to in the background while you keep working in other tabs. Speed, pitch and volume are all adjustable, and the extension highlights text as it is spoken so you can follow along. The voice library covers 60+ languages with more than 100 voices, including premium neural voices that sound markedly more natural than default system speech. A companion web and mobile reader lets you save articles, documents and books into a personal library and pick up listening on another device. The developers emphasise a privacy-first design: Voice Out requests only minimal browser permissions and states that it does not track users or sell data. Typical users include language learners practising by listening while reading, proofreaders and writers catching errors by ear, students and commuters who prefer audio, and people with reading difficulties or visual impairments who rely on spoken text. The service runs on Windows, macOS, Linux and Chromebooks without special hardware, and is free to start with an optional Premium upgrade for the full voice library. **Pricing & Plans:** Freemium. A free forever plan covers read-aloud in 60+ languages across webpages, Google Docs, PDFs and ebooks with built-in keyboard commands. Voice Out Premium unlocks 100+ natural-sounding premium voices plus premium support. Exact subscription prices are shown in the extension and on the sign-in page. - **One-click read aloud:** Click the toolbar button to start text-to-speech on any webpage, Google Doc, PDF or ebook without copying text into another app. - **100+ voices in 60+ languages:** Choose from a large multilingual voice library, including premium neural voices that sound more natural than default operating-system speech. - **Playback controls:** Adjust speed, pitch and volume, pause and skip, and keep listening in the background while you work in other tabs. - **Synced reading library:** Save articles, documents and PDFs to a personal library and continue listening later from the web or your phone, with highlighting that follows the spoken text. - **Privacy-first permissions:** The extension requests only minimal browser permissions and, according to the developers, does not track you or sell your data. **Strengths:** Works directly inside the browser on nearly any website, plus Google Docs, PDFs and ebooks; Large multilingual voice library with 100+ voices across 60+ languages; Free forever plan with no special hardware needed on Windows, macOS, Linux or Chromebooks; Minimal permissions and an explicit no-data-selling privacy stance **Limitations:** Full premium voice quality sits behind the paid Premium tier; Best experience requires installing a browser extension rather than using a plain web app [Profile (Markdown)](https://openaitools.app/tool/voice-out.md) ## Frequently Asked Questions ### How do CastReader and Voice Out compare in monthly traffic? CastReader has 55,999 monthly visits, while Voice Out has 39,679. Traffic estimates describe audience size, not product quality. ### How do their growth rates compare? CastReader has a month-over-month growth rate of +9.8%; Voice Out has -27.1%. ### How does pricing compare? CastReader: Freemium. Freemium. Free plan: $0 forever with 20 minutes of listening per day, standard voices up to 1.25x speed, 3 AI explains per day, and 30,000 translation characters per day when signed in. Pro: $4.99/month or $35.99/year (about $3/month, 40% saving) removing the daily listening cap, unlocking full ebooks and long PDFs, more premium voices up to 3x speed, unlimited daily explains, 120 personal-voice minutes per membership month, and 3,000,000 translation characters per month. A 3-day free trial is available; billing is via Stripe. Voice Out: Freemium. Freemium. A free forever plan covers read-aloud in 60+ languages across webpages, Google Docs, PDFs and ebooks with built-in keyboard commands. Voice Out Premium unlocks 100+ natural-sounding premium voices plus premium support. Exact subscription prices are shown in the extension and on the sign-in page. ## Alternatives | # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | 1 | [Speechify](https://openaitools.app/tool/speechify) | 5,457,475 | +0.5% | Freemium | Text to speech and voice AI across every device | [.md](https://openaitools.app/tool/speechify.md) | | 2 | [Luvvoice](https://openaitools.app/tool/luvvoice-free-text-to-speech) | 1,438,923 | -8.2% | Freemium | Free AI text to speech with 200+ voices in 70+ languages | [.md](https://openaitools.app/tool/luvvoice-free-text-to-speech.md) | | 3 | [TTSMaker](https://openaitools.app/tool/ttsmaker) | 1,158,846 | +6.8% | Freemium | Free online text-to-speech with hundreds of AI voices across more than 100 languages | [.md](https://openaitools.app/tool/ttsmaker.md) | | 4 | [AnyToSpeech](https://openaitools.app/tool/anytospeech) | 988,327 | +28% | Freemium | All-in-one AI speech, transcription, and voice cloning studio | [.md](https://openaitools.app/tool/anytospeech.md) | | 5 | [Peech: Text to Speech Reader](https://openaitools.app/tool/peech-text-to-speech-reader) | 353,093 | -26% | Freemium | Listen to anything. Beautifully. | [.md](https://openaitools.app/tool/peech-text-to-speech-reader.md) | | 6 | [Crikk](https://openaitools.app/tool/crikk) | 212,116 | -14.5% | Freemium, Free Trial, Paid | Natural AI text to speech with 910+ voices on web, iOS and Android | [.md](https://openaitools.app/tool/crikk.md) | | 7 | [Audeus: Text to Speech Reader](https://openaitools.app/tool/audeus-text-to-speech-reader) | 32,118 | -37.8% | Freemium, Free Trial | Turn PDFs, docs and web pages into natural-sounding audio you can listen to anywhere | [.md](https://openaitools.app/tool/audeus-text-to-speech-reader.md) | | 8 | [GPT Reader & Transcriber](https://openaitools.app/tool/gpt-reader-a-free-ai-text-to-speech) | 29,995 | -16% | Free | Free ChatGPT-style text-to-speech and speech-to-text in your browser | [.md](https://openaitools.app/tool/gpt-reader-a-free-ai-text-to-speech.md) | | 9 | [Read Aloud Reader](https://openaitools.app/tool/read-aloud-reader) | 28,361 | +87.7% | Freemium | Free browser text-to-speech with natural neural voices | [.md](https://openaitools.app/tool/read-aloud-reader.md) | | 10 | [Readio](https://openaitools.app/tool/readio-1) | 12,402 | +6.7% | Freemium | Listen to PDFs, ebooks, and webpages in natural AI voices with synced highlighting. | [.md](https://openaitools.app/tool/readio-1.md) | --- Source: https://openaitools.app/compare/castreader-vs-voice-out More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)