CastReader

CastReader

In-app purchases

About this app

CastReader turns your documents, books, and web pages into natural-sounding audio — and goes further with AI-powered explanations that help you truly understand what you read.

Commuting, exercising, or resting your eyes? Listen to anything: PDFs, Word documents, EPUB books, plain text, web articles, and even photos of printed pages.

📖 Read aloud
• Natural text-to-speech for PDF, Word, EPUB, TXT, web pages, and photos
• Word-by-word and line-by-line highlighting that follows along
• Adjustable playback speed and multiple voices
• Background playback with lock-screen controls

🧠 AI explain
• Clear, spoken explanations of complex documents
• Handwritten-style annotations on the original text — highlights, circles, notes
• Great for studying, research, contracts, and dense material

📂 Works with everything
• PDF, Word (DOCX), EPUB, TXT, Markdown
• Web pages — just paste a link
• Photos and screenshots — on-device OCR extracts the text
• Type or paste text directly

✨ More
• Multi-language support, including English and Chinese
• Multiple natural voices
• Faster playback speeds with Pro
• Reading history, synced when you sign in

CastReader is free with a generous daily allowance. Upgrade to Pro for unlimited listening and explaining, premium voices, and higher speeds.

🔒 Privacy
Files are handled on your device whenever possible. Only the text needed to generate speech and explanations is sent, over secure encrypted connections.

Turn reading into listening - anytime, anywhere. Download CastReader today.

What’s new

Improved Kindle Read Aloud and Explain with smoother page turns, preloading, and better highlights.
Refined import, replay, Pro sync, multilingual text, and dark/light mode support.