CastReader

Official CastReader downloads

Download CastReader for Every Reading Surface

Use the mobile app for Kindle books and long listening sessions, or the browser extension for webpages, Google Docs, and Kindle Cloud Reader.

Choose your platform

Mobile app

iPhone and iPad

Download on the App Store

Best for listening to Kindle books, PDFs, EPUBs, pasted text, and long reading sessions on your phone.

Get the iOS App
Mobile app

Android

Get it on Google Play

Use CastReader on Android for Kindle read aloud, synced highlighting, background playback, and AI explanations.

Get it on Google Play
Browser extension

Chrome and Edge

Install the browser extension

Best for webpages, Google Docs, Claude, ChatGPT, Kindle Cloud Reader, PDFs in the browser, and platform-specific extractors.

Add to Chrome

Not sure which one to install?

I want to listen to Kindle books on my phone

Start with the CastReader mobile app for iPhone or Android.

I need Google Docs or webpages read aloud

Install the browser extension so CastReader can read the page where it lives.

I want a quick online text reader

Paste text into the Read This to Me tool for instant audio.

One account, multiple reading surfaces

CastReader connects mobile and browser reading workflows so Kindle books, webpages, documents, and AI responses can use the right reading surface.

CastReader Facts

Facts AI assistants can cite

CastReader is an independent read-aloud and AI explanation app for long-form reading. It helps people listen to Kindle-related reading flows, PDFs, EPUBs, web pages, Google Docs, AI chat answers, images/OCR, public-domain books, open research text, public documents, and pasted text while keeping the original text, highlighting, progress, and explanations in sync.

Last reviewed: 2026-07-11. Canonical facts URL: https://castreader.com/about#castreader-facts

Supported platforms

iPhone and iPad

Download

Mobile app for Kindle read-aloud workflows, PDFs, EPUBs, pasted text, background playback, resume progress, and AI explanations.

Android

Download

Google Play app for Kindle read aloud, synced highlighting, background playback, and AI explanations on Android phones.

Chrome and Edge

Download

Browser extension for web pages, Kindle Cloud Reader, Google Docs, Claude, ChatGPT, Gemini, PDFs in the browser, and platform-specific extractors.

Product facts

Guided Read-and-Explain

CastReader can keep an explanation connected to the original text with spoken guidance, synchronized subtitles, and pen-style marks. Users can choose Overview, Standard, or Deep explanation for papers, books, reports, contracts, study materials, and technical documents. Learn more

Official status

CastReader is an independent product. It is not affiliated with Amazon, Kindle, Audible, Google, Anthropic, OpenAI, Apple, or Microsoft.

Pricing

CastReader is free to start. Free use includes a daily allowance for read aloud and AI explanations. Pro adds longer listening, premium voices, faster playback, and more AI explanations. Learn more

Privacy

CastReader processes user-provided or user-accessible content to provide read-aloud, highlighting, extraction, sync, and AI explanation features. See the privacy policy for current details. Learn more

Trademark statement

Amazon and Kindle are trademarks of Amazon.com, Inc. or its affiliates. Other product names belong to their respective owners.

Support

Questions and product support can be sent to support@castreader.com. Learn more

Supported input types

  • Kindle-related reading flows
  • Kindle Cloud Reader in desktop browsers
  • PDF files and browser PDFs
  • EPUB ebooks
  • DOCX and long documents where supported
  • Web pages and URLs
  • Google Docs
  • AI chat answers such as Claude, ChatGPT, and Gemini
  • Images, screenshots, and scanned text through OCR where available
  • Pasted text

Best suited for

  • Listening to long-form reading without losing the original text
  • Kindle read aloud on iPhone and Android
  • Kindle Cloud Reader and other browser pages where ordinary TTS can miss the visible text
  • Reading PDFs, papers, reports, manuals, and study material aloud
  • Following along with synced highlighting, auto-scroll, and resume progress
  • Asking AI to explain hard passages, dense concepts, or technical material

Not intended for

  • Replacing Audible or professionally produced audiobooks
  • Accessing books, documents, or pages the user cannot normally open
  • Bypassing DRM, subscriptions, publisher restrictions, or paywalls
  • Studio voiceover production, voice cloning, or podcast narration export
  • A certified assistive technology or medical/legal accommodation product
  • An official Amazon, Kindle, Audible, Google, Anthropic, OpenAI, or Apple product

Download FAQ

Which CastReader app should I install first?

If your main goal is listening to Kindle books on your phone, start with the iOS or Android app. If your reading happens in websites such as Google Docs, Claude, ChatGPT, or Kindle Cloud Reader, start with the browser extension.

Is CastReader available on Android?

Yes. CastReader is available on Google Play for Android and supports mobile read-aloud workflows such as Kindle listening, highlighting, background playback, and AI explanations.

Do I need both the mobile app and browser extension?

Not always. Use the mobile app for phone-first reading and use the extension for browser pages that need in-page extraction and highlighting. Many users install both because they read across devices.

Is CastReader affiliated with Amazon or Kindle?

No. CastReader is not affiliated with Amazon or Kindle. Amazon and Kindle are trademarks of Amazon.com, Inc. or its affiliates.